Shayanmanesh,M , , Goli,S , and Soleymani,B . "Survey of Midwives’ Practice and its Related Factors toward Exercise Instruction during Pregnancy in Health Centers of Isfahan in 2011", The Iranian Journal of Obstetrics, Gynecology and Infertility, 15, 38, 2013, 17-23. doi: 10.22038/ijogi.2013.520