Observation shows, intervention teaches - Claude Bernard.
J L H Hans
JL
Evers
D019317:Evidence-Based Medicine; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D016032:Randomized Controlled Trials as Topic / Q000941:ethics*; D027724:Reproductive Techniques, Assisted; D012107:Research Design