Multiple pregnancy. 1.

Abnormalities, Severe Teratoid Animals Birth Weight Chorionic Gonadotropin/pharmacology Clomiphene/pharmacology Diseases in Twins Disseminated Intravascular Coagulation Embryonic and Fetal Development Female Fetal Diseases Fetofetal Transfusion Genotype Gonadotropins/metabolism Heart Defects, Congenital Hemoglobins/analysis Humans Infant Mortality Infant, Newborn Intelligence Maternal Age Ovulation/drug effects Ovum Placenta/anatomy & histology,blood supply Pregnancy Pregnancy, Multiple Seasons Twins

Chorionic Gonadotropin Gonadotropins Hemoglobins Clomiphene