title: Multiple pregnancy. 1.
mesh_terms: D009008:Abnormalities, Severe Teratoid; D000818:Animals; D001724:Birth Weight; D006063:Chorionic Gonadotropin / Q000494:pharmacology; D002996:Clomiphene / Q000494:pharmacology; D004200:Diseases in Twins; D004211:Disseminated Intravascular Coagulation; D005314:Embryonic and Fetal Development; D005260:Female; D005315:Fetal Diseases; D005330:Fetofetal Transfusion; D005838:Genotype; D006062:Gonadotropins / Q000378:metabolism; D006330:Heart Defects, Congenital; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007360:Intelligence; D008423:Maternal Age; D010060:Ovulation / Q000187:drug effects; D010063:Ovum; D010920:Placenta / Q000033:anatomy & histology / Q000098:blood supply; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012621:Seasons; D014427:Twins
chemical_list: D006063:Chorionic Gonadotropin; D006062:Gonadotropins; D006454:Hemoglobins; D002996:Clomiphene