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Karl Hansen

Concepts (312)

Concepts are derived automatically from a person's publications.
Concepts are listed by decreasing relevance which is based on many factors, including how many publications the person wrote about that topic, how long ago those publications were written, and how many publications other people have written on that same topic.


Name Number of Publications Most Recent Publication Publications by All Authors Concept Score Why?
Infertility, Female
19
2022
43
3.990
Why?
Infertility
10
2022
35
3.710
Why?
Ovulation Induction
14
2022
34
3.020
Why?
Ovarian Follicle
10
2019
84
2.580
Why?
Live Birth
14
2021
40
2.460
Why?
Insemination, Artificial
9
2025
27
1.830
Why?
Polycystic Ovary Syndrome
14
2022
65
1.720
Why?
Pregnancy
33
2025
1181
1.630
Why?
Infertility, Male
8
2022
23
1.590
Why?
Pregnancy Rate
17
2025
49
1.280
Why?
Watchful Waiting
4
2022
18
1.270
Why?
Aging
11
2019
976
1.270
Why?
Female
59
2025
15156
1.250
Why?
Fertility
8
2022
58
1.230
Why?
Fertility Agents, Female
8
2022
15
1.220
Why?
Luteal Phase
2
2019
7
1.220
Why?
Progesterone
3
2019
129
1.150
Why?
Pregnancy, Ectopic
4
2021
11
1.120
Why?
Abortifacient Agents, Nonsteroidal
3
2021
5
1.100
Why?
Reproduction
4
2012
63
1.080
Why?
Humans
67
2025
28121
0.980
Why?
Adult
44
2025
7757
0.950
Why?
Ovary
3
2013
69
0.920
Why?
Reproductive Techniques, Assisted
5
2021
17
0.900
Why?
Hysterosalpingography
2
2020
4
0.830
Why?
Embryo Transfer
3
2021
13
0.830
Why?
Fertilization in Vitro
6
2021
24
0.800
Why?
Proprotein Convertases
1
2022
11
0.780
Why?
Models, Biological
3
2014
465
0.770
Why?
Prospective Studies
14
2022
1249
0.770
Why?
Insulin Resistance
3
2022
176
0.760
Why?
Life Style
3
2022
88
0.750
Why?
Progestins
2
2019
10
0.740
Why?
Cryopreservation
2
2021
13
0.710
Why?
Ovarian Reserve
2
2019
9
0.660
Why?
Ultrasonography
6
2018
241
0.650
Why?
Gonadotropins
5
2020
22
0.620
Why?
Spermatozoa
4
2025
33
0.600
Why?
Biomarkers
8
2022
755
0.600
Why?
Estradiol
4
2014
175
0.590
Why?
Chorionic Gonadotropin
3
2021
22
0.550
Why?
Gonadal Steroid Hormones
1
2016
24
0.520
Why?
Pregnancy Outcome
6
2021
131
0.520
Why?
Obesity
6
2022
668
0.520
Why?
Clomiphene
5
2021
11
0.500
Why?
Sperm Count
4
2025
17
0.490
Why?
Premenopause
1
2015
20
0.490
Why?
Off-Label Use
1
2015
6
0.470
Why?
Drug Labeling
1
2015
4
0.470
Why?
Endometriosis
1
2015
19
0.470
Why?
Birth Rate
1
2014
11
0.470
Why?
Drug Prescriptions
1
2015
46
0.460
Why?
Follicle Stimulating Hormone
4
2012
71
0.460
Why?
Ovariectomy
2
2012
53
0.430
Why?
Primary Ovarian Insufficiency
1
2013
6
0.430
Why?
Semen
3
2022
29
0.410
Why?
Evidence-Based Medicine
1
2013
145
0.390
Why?
Treatment Outcome
11
2022
2380
0.390
Why?
Abortion, Spontaneous
3
2021
17
0.380
Why?
Male
20
2025
13487
0.380
Why?
Pregnancy, Multiple
3
2015
8
0.370
Why?
Young Adult
15
2022
2731
0.370
Why?
Insemination
2
2020
6
0.340
Why?
Methotrexate
2
2021
34
0.330
Why?
Sperm Motility
3
2025
15
0.320
Why?
Randomized Controlled Trials as Topic
7
2022
385
0.320
Why?
5'-Nucleotidase
4
2002
13
0.310
Why?
Body Mass Index
5
2022
398
0.310
Why?
Antioxidants
2
2021
225
0.300
Why?
Inhibins
4
2012
8
0.300
Why?
Follicular Phase
2
2004
8
0.290
Why?
Middle Aged
10
2019
7164
0.280
Why?
Adolescent
13
2021
3123
0.280
Why?
United States
8
2022
2149
0.260
Why?
Triazoles
2
2015
16
0.240
Why?
Nitriles
2
2015
33
0.240
Why?
Patient Selection
2
2015
148
0.230
Why?
Risk Factors
7
2022
2084
0.230
Why?
Triglycerides
2
2022
120
0.220
Why?
Retrospective Studies
6
2025
2557
0.220
Why?
Galanin-Like Peptide
1
2003
1
0.210
Why?
Infant, Newborn
4
2020
873
0.210
Why?
Sympathetic Nervous System
1
2003
68
0.200
Why?
Metabolic Syndrome
2
2021
78
0.200
Why?
Insemination, Artificial, Homologous
2
2020
4
0.200
Why?
Dilatation and Curettage
2
2021
4
0.200
Why?
Androgens
2
2020
47
0.200
Why?
Proprotein Convertase 9
1
2022
3
0.200
Why?
Chi-Square Distribution
4
2015
145
0.200
Why?
Subtilisins
1
2022
6
0.200
Why?
Semen Analysis
4
2025
13
0.190
Why?
Cholesterol, LDL
1
2022
65
0.190
Why?
Testosterone
2
2019
70
0.190
Why?
Predictive Value of Tests
3
2016
475
0.190
Why?
Decision Support Techniques
1
2022
50
0.190
Why?
Cohort Studies
5
2022
886
0.190
Why?
Lipoproteins
1
2022
99
0.190
Why?
Vitamins
1
2021
23
0.180
Why?
Hydrocortisone
1
2022
89
0.180
Why?
Anti-Mullerian Hormone
2
2012
6
0.180
Why?
Precision Medicine
1
2022
77
0.180
Why?
Sleep
1
2021
107
0.180
Why?
Cholesterol
1
2022
200
0.170
Why?
Endometrium
1
2020
39
0.170
Why?
Ethiodized Oil
1
2020
2
0.170
Why?
Fertility Agents
1
2020
2
0.170
Why?
Gonadotropin-Releasing Hormone
2
2015
37
0.170
Why?
Fertilization
2
2022
9
0.170
Why?
Surveys and Questionnaires
3
2021
969
0.170
Why?
Child Behavior
1
2020
27
0.170
Why?
Pregnancy Complications
1
2021
111
0.160
Why?
Child
3
2020
2242
0.160
Why?
BRCA2 Protein
1
2019
19
0.160
Why?
Reproductive Medicine
2
2018
4
0.160
Why?
BRCA1 Protein
1
2019
24
0.160
Why?
Metformin
1
2020
36
0.160
Why?
Fallopian Tubes
2
2018
15
0.160
Why?
Contrast Media
1
2020
97
0.160
Why?
Erectile Dysfunction
1
2019
15
0.160
Why?
Water
1
2020
135
0.160
Why?
Ovulation
2
2018
28
0.160
Why?
Spermatogenesis
1
2019
11
0.160
Why?
Leiomyoma
1
2019
9
0.160
Why?
Child Development
1
2020
75
0.160
Why?
Endocrinologists
1
2019
2
0.160
Why?
National Institute of Child Health and Human Development (U.S.)
1
2018
2
0.150
Why?
Ethics Committees, Research
1
2018
6
0.150
Why?
Clinical Protocols
1
2018
46
0.150
Why?
Pre-Eclampsia
1
2018
49
0.150
Why?
Gynecology
1
2019
58
0.150
Why?
Menstrual Cycle
2
2012
24
0.150
Why?
Antidepressive Agents
1
2018
29
0.150
Why?
Reproducibility of Results
3
2010
773
0.140
Why?
Vitamin D
1
2018
49
0.140
Why?
Vitamin D Deficiency
1
2018
31
0.140
Why?
Transcriptome
1
2019
214
0.140
Why?
Quality of Life
2
2019
491
0.140
Why?
Diabetes, Gestational
1
2018
68
0.140
Why?
Sexual Dysfunction, Physiological
1
2017
6
0.140
Why?
Depression
1
2019
215
0.140
Why?
Oxidative Stress
1
2021
663
0.130
Why?
Depressive Disorder, Major
1
2018
127
0.130
Why?
Alcohol Drinking
2
2015
167
0.130
Why?
Contraceptives, Oral
1
2015
23
0.120
Why?
Chlamydia trachomatis
1
2015
16
0.120
Why?
Chlamydia Infections
1
2015
17
0.120
Why?
Patient Dropouts
1
2015
6
0.120
Why?
Multicenter Studies as Topic
3
2021
48
0.120
Why?
Cross-Sectional Studies
2
2017
968
0.120
Why?
Promoter Regions, Genetic
2
2002
345
0.120
Why?
Ovulation Inhibition
1
2015
1
0.120
Why?
Contraceptives, Oral, Hormonal
1
2015
9
0.120
Why?
Referral and Consultation
1
2015
97
0.120
Why?
Organ Size
2
2020
85
0.120
Why?
Antibodies, Bacterial
1
2015
103
0.120
Why?
United States Food and Drug Administration
1
2015
45
0.120
Why?
Time Factors
2
2018
1593
0.110
Why?
Models, Theoretical
1
2015
134
0.110
Why?
Case-Control Studies
3
2018
722
0.110
Why?
Regulatory Sequences, Nucleic Acid
1
1994
27
0.110
Why?
Severity of Illness Index
2
2013
454
0.110
Why?
Analysis of Variance
1
2014
390
0.110
Why?
Immunoglobulin G
1
2015
270
0.110
Why?
Androgen-Insensitivity Syndrome
1
2013
4
0.110
Why?
Protein Biosynthesis
1
1994
110
0.110
Why?
Research Design
2
2019
182
0.100
Why?
Preoperative Care
1
2013
82
0.100
Why?
Prevalence
3
2019
494
0.100
Why?
Risk Assessment
4
2022
611
0.100
Why?
Congresses as Topic
1
2012
35
0.100
Why?
Smoking
1
2015
473
0.090
Why?
Down-Regulation
2
2019
198
0.090
Why?
Infant
2
2020
996
0.090
Why?
Child, Preschool
2
2020
1137
0.090
Why?
Follow-Up Studies
3
2020
1014
0.080
Why?
RNA, Messenger
3
2003
656
0.080
Why?
Multivariate Analysis
3
2015
300
0.080
Why?
Recombinant Proteins
2
2004
413
0.080
Why?
Magnetic Resonance Imaging
1
2013
825
0.080
Why?
Double-Blind Method
2
2020
414
0.070
Why?
Anthropometry
1
2008
94
0.070
Why?
Hyperandrogenism
2
2018
11
0.070
Why?
Observer Variation
2
2007
43
0.070
Why?
Hydronephrosis
1
2007
11
0.070
Why?
Ureteral Obstruction
1
2007
12
0.070
Why?
Base Sequence
4
1995
584
0.070
Why?
Animals
4
2013
10399
0.070
Why?
Cloning, Molecular
3
1995
206
0.060
Why?
Stents
1
2007
121
0.060
Why?
Molecular Sequence Data
4
1995
1050
0.060
Why?
Prognosis
2
2020
803
0.060
Why?
Phenotype
2
2018
679
0.060
Why?
Image Processing, Computer-Assisted
1
2007
257
0.060
Why?
Odds Ratio
2
2015
237
0.060
Why?
Inhibin-beta Subunits
1
2004
3
0.060
Why?
Activins
1
2004
4
0.060
Why?
Injections, Intraventricular
1
2003
7
0.050
Why?
Metabolism
1
2003
9
0.050
Why?
Arcuate Nucleus of Hypothalamus
1
2003
5
0.050
Why?
Uncoupling Protein 1
1
2003
14
0.050
Why?
Pituitary Gland
1
2003
53
0.050
Why?
Academic Medical Centers
2
2015
75
0.050
Why?
Ion Channels
1
2003
24
0.050
Why?
Adipose Tissue, Brown
1
2003
14
0.050
Why?
Pro-Opiomelanocortin
1
2003
14
0.050
Why?
Reference Values
1
2003
200
0.050
Why?
Eating
1
2003
70
0.050
Why?
Leptin
1
2003
67
0.050
Why?
Mitochondrial Proteins
1
2003
72
0.050
Why?
Drug Administration Schedule
1
2003
223
0.050
Why?
Logistic Models
2
2015
407
0.050
Why?
Body Weight
1
2003
250
0.050
Why?
alpha-Amylases
1
2022
2
0.050
Why?
Coitus
1
2022
14
0.050
Why?
Maternal Age
1
2022
25
0.050
Why?
Snoring
1
2021
8
0.050
Why?
Preconception Care
1
2022
17
0.050
Why?
Uterine Hemorrhage
1
2021
9
0.050
Why?
Carrier Proteins
1
2003
252
0.050
Why?
Clinical Decision-Making
1
2022
63
0.050
Why?
Ultrasonography, Prenatal
1
2021
36
0.050
Why?
Weight Loss
1
2022
81
0.040
Why?
Sleep Apnea, Obstructive
1
2021
41
0.040
Why?
Intestinal Mucosa
1
2002
197
0.040
Why?
Sleep Wake Disorders
1
2021
65
0.040
Why?
Immunohistochemistry
2
2019
462
0.040
Why?
Patient Satisfaction
1
2021
97
0.040
Why?
Nuclear Proteins
1
2002
247
0.040
Why?
Combined Modality Therapy
1
2021
302
0.040
Why?
Family Characteristics
1
2020
47
0.040
Why?
Gestures
1
2020
1
0.040
Why?
Rats
1
2003
1564
0.040
Why?
Heterozygote
1
2019
65
0.040
Why?
Germ-Line Mutation
1
2019
32
0.040
Why?
Weight Gain
1
2020
74
0.040
Why?
Observational Studies as Topic
1
2019
54
0.040
Why?
RNA Processing, Post-Transcriptional
1
2019
20
0.040
Why?
Membrane Proteins
1
2003
485
0.040
Why?
Chromatin Assembly and Disassembly
1
2019
21
0.040
Why?
Gene Regulatory Networks
1
2019
76
0.040
Why?
Hypoglycemic Agents
1
2020
108
0.040
Why?
DNA-Binding Proteins
1
2002
491
0.040
Why?
Transcription Factors
1
2002
522
0.040
Why?
Birth Weight
1
2018
63
0.040
Why?
Mice, Inbred C57BL
1
2003
1570
0.040
Why?
Pilot Projects
1
2020
432
0.040
Why?
Registries
1
2020
386
0.040
Why?
Asian Americans
1
2018
40
0.040
Why?
DNA Methylation
1
2019
152
0.040
Why?
Age Factors
1
2020
733
0.040
Why?
Exercise
1
2022
482
0.030
Why?
Diagnosis, Differential
1
2018
372
0.030
Why?
Sex Hormone-Binding Globulin
1
2017
4
0.030
Why?
Mice
3
2003
4645
0.030
Why?
Hirsutism
1
2017
18
0.030
Why?
Waist Circumference
1
2017
20
0.030
Why?
Hypertriglyceridemia
1
2017
8
0.030
Why?
Laparoscopy
1
2018
146
0.030
Why?
Cognition
1
2020
322
0.030
Why?
Transcription, Genetic
2
1995
402
0.030
Why?
Adenosine Deaminase
1
1995
5
0.030
Why?
Sequence Deletion
1
1995
66
0.030
Why?
Serologic Tests
1
2015
19
0.030
Why?
Receptors, Purinergic P1
1
1995
2
0.030
Why?
Base Composition
1
1995
108
0.030
Why?
African Americans
1
2018
350
0.030
Why?
Gene Expression Regulation, Enzymologic
1
1995
94
0.030
Why?
Blood Glucose
1
2017
311
0.030
Why?
Linear Models
1
2015
203
0.030
Why?
Enzyme-Linked Immunosorbent Assay
1
2015
257
0.030
Why?
Drug Therapy, Combination
1
2015
207
0.030
Why?
Binding Sites
1
1995
354
0.030
Why?
Antibodies
1
1995
124
0.030
Why?
Internet
1
2015
124
0.030
Why?
RNA Caps
1
1994
2
0.030
Why?
Restriction Mapping
1
1994
21
0.030
Why?
Genomic Library
1
1994
10
0.030
Why?
Gene Amplification
1
1994
22
0.030
Why?
Orchiectomy
1
2013
12
0.030
Why?
Epididymis
1
2013
5
0.030
Why?
Indians, North American
1
2018
517
0.030
Why?
Placenta
1
1994
75
0.030
Why?
Superovulation
1
2012
6
0.020
Why?
Alcoholic Beverages
1
2012
4
0.020
Why?
Coffee
1
2012
5
0.020
Why?
Tea
1
2012
7
0.020
Why?
Risk Reduction Behavior
1
2012
46
0.020
Why?
Abdominal Pain
1
2007
36
0.020
Why?
Emergency Service, Hospital
1
2007
122
0.020
Why?
Sequence Homology, Amino Acid
2
1995
132
0.010
Why?
Luteinizing Hormone
1
2004
57
0.010
Why?
Amino Acid Sequence
2
1995
689
0.010
Why?
Apyrase
1
2002
4
0.010
Why?
Hypoxia-Inducible Factor 1
1
2002
11
0.010
Why?
Cyclic AMP Response Element-Binding Protein
1
2002
25
0.010
Why?
Permeability
1
2002
61
0.010
Why?
Cell Hypoxia
1
2002
35
0.010
Why?
Adenosine Triphosphatases
1
2002
49
0.010
Why?
Hypoxia-Inducible Factor 1, alpha Subunit
1
2002
60
0.010
Why?
Antigens, CD
1
2002
140
0.010
Why?
Cells, Cultured
1
2002
985
0.010
Why?
Gene Expression Regulation
1
2002
633
0.010
Why?
Chickens
1
1995
61
0.010
Why?
DNA Primers
1
1995
146
0.010
Why?
Antibody Formation
1
1995
77
0.010
Why?
Mice, Inbred BALB C
1
1995
276
0.010
Why?
Ribonucleases
1
1993
9
0.010
Why?
Peptide Fragments
1
1995
202
0.010
Why?
Organ Specificity
1
1993
82
0.010
Why?
Blotting, Western
1
1995
510
0.010
Why?
Polymerase Chain Reaction
1
1993
268
0.010
Why?
DNA
1
1993
372
0.010
Why?
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THIS IS A DEVELOPMENT VERSION OF PROFILES. PLEASE GO TO THE PRODUCTION ENVIRONMENT FOR UPDATES