aDepartment of Ob/Gyn, Northshore University HealthSystem, Evanston, IL, United States
bDepartment of Ob/Gyn, Pritzker School of Medicine, University of Chicago, Chicago, IL, United States
cDepartment of Anesthesiology, Chronic Pain and Fatigue Research Center, University of Michigan, Ann Arbor, MI, United States
*Corresponding author. Address: Department of Obstetrics and Gynecology, Evanston Hospital, Walgreen's Bldg 1507, 2650 Ridge Ave, Evanston, IL 60201, United States. Tel.: 872 226 7124; fax: 847 570 1846; E-mail address: [email protected] (K.M. Hellman).
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