puits (1) effet (1) âge (1) enfant (1) taux (1) Costs (1) Children (1) Methods (1) Rates (1) Birth (1) Year (1) Women (1) Will (1) Weights and measures (1) Twins (1) Triplets (1) Pregnancy (1) Parturition (1) Labor (Obstetrics) (1) Infertility (1) Fertilization in vitro (1) Fertility (1) Cycles (1) Children (1) Childbirth (1) Age (1) Methods (1) Western countries (1) Will (1) Women (1)