1. Intrapartum Care. Care of healthy women and their babies during childbirth;National Institute for Health Care and Excellence,2017
2. Recommandation de bonne pratique pour l’accouchement à bas risque;Centre fédéral d’expertise des soins de santé,2010
3. Clinical practice guideline on care in normal childbirth;Basque Office for Health Technology Assessment,2010
4. Normal birth;Queensland Maternity and Neonatal Clinical Guidelines Program,2012
5. Approches to limit interventions during labor and birth. Committee opinion no 687;American College of Obstetricians and Gynecologists;Obstet Gynecol,2017