1. CPSS, What Mother Says: The Canadian Maternity Experiences Survey. 2008, Canada: Public Health Agency of Canada
2. Chalmers B, et al: The Canadian maternity experiences survey: an overview of findings. J Obstet Gynaecol Can. 2008, 30 (3): 217-228.
3. CIHI, Giving Birth in Canada: A Regional Profile. Canadian Institue for Health Information. 2007,
http://secure.cihi.ca/cihiweb/products/childbirth_aib_070725_e.pdf
,
4. Anim-Somuah M, Smyth R, Howell C: Epidural versus non-epidural or no analgesia in labour. The Cochrane database of systematic reviews. 2011, 7 (12): CD000331
5. Biasucci G, et al: Cesarean delivery may affect the early biodiversity of intestinal bacteria. J Nutr. 2008, 138 (9): 1796S-1800S.