temps (durée) (1) association (1) hôpital (1) ville (1) public (1) Mexique (1) Mexico (1) Complications (1) Methods (1) Women (1) Week (1) Time (1) Symptoms (1) Social groups (1) Puerperium (1) Prenatal care (1) Postnatal care (1) Mothers (1) Materials (1) Days (1) Confidence intervals (1) Methods (1) Materials (1) Women (1) Indicative (1)