1. Radford Thomas observations on the caesarean section and on other obstetrics complications,1865
2. Birth final data for 2006;Martin;Natl Vital Stat Rep,2009
3. U.S. national trends in labor induction, 1989-1998;Zhang;J Reprod Med,2002
4. A statewide initiative to reduce inappropriate scheduled birth at 36 (0/7)-38 6/7 weeks’ gestation;Donovan;Am J Obstet Gynecol,2010
5. Parturition;Smith;N Engl J Med,2007