1. United States Department of Social and Health Services, Office of Disease Prevention and Health Promotion 2017 Healthy People 2020 topics and objectives: maternal, infant, and child health https://www.healthypeople.gov/2020/topics-objectives/topic/maternal-infant-and-child-health/objectives
2. World Health Organization (WHO) WHO statement on cesarean section rates 2015 http://www.who.int/reproductivehealth/publications/maternal_perinatal_health/cs-statement/en/
3. National Partnership for Women & Families Transforming maternity care http://transform.childbirthconnection.org/resources/datacenter/chargeschart/
4. Informing the patient and the community about the implications of primary cesarean;Brown;Semin Perinatol,2012
5. Vaginal birth after cesarean: an effective method to reduce cesarean;Sabol;Clin Obstet Gynecol,2015