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Constantin CM, Martinelli AM, Foster SO, Bonney EA, Strickland OL.Constantin CM, et al. Among authors: bonney ea.J Midwifery Womens Health. 2003 Jul-Aug;48(4):258-67, 302-4. doi: 10.1016/s1526-9523(03)00084-9.J Midwifery Womens Health. 2003.PMID: 12867910Review.