Trying to avoid bias in case-control and case-cohort studies.
McDonough
Paul G
PG
D016022:Case-Control Studies; D015331:Cohort Studies; D005260:Female; D006062:Gonadotropins / Q000627:therapeutic use; D006801:Humans; D015588:Observer Variation; D010062:Ovulation Induction / Q000592:standards*; D015203:Reproducibility of Results; D027724:Reproductive Techniques, Assisted / Q000592:standards*
D006062:Gonadotropins