TY - JOUR TI - Obstetric assistance during labour and childbirth as a perinatal risk factor PY - 1988 AU - Tanaka, Ana Cristina D'Andretta T2 - Health Policy and Planning DO - 10.1093/heapol/3.3.245 UR - https://doi.org/10.1093/heapol/3.3.245 VL - 3 IS - 3 SP - 245-7 ER -