Mortality (1) Employment (1) Causes (1) Prevention (1) Diseases (1) Women patients (1) Twins (1) Tobacco (1) Sick (1) Multiple pregnancy (1) Pregnancy (1) Placenta (1) Pathology (1) Motherhood (1) Premature labor (1) Equality (1) Chorion (1) Causation (1) Anemia (1) Age (1) Rupture (1) Population (1) Patients (1) Origin (1) Occupations (1) Infections (1) Equipment and supplies (1) Fracture (1) Supplies and stores (1) Risk factors (1)