[1] Univ Med & Dent New Jersey, Robert Wood Johnson Med Sch, Dept Obstet Gynecol & Reprod Serv, Robert Wood Johnson Univ Hosp, New Brunswick, NJ 08901 USA
[2] Univ Med & Dent New Jersey, Robert Wood Johnson Med Sch, Perioperat Serv & Surg Suite, Robert Wood Johnson Univ Hosp, New Brunswick, NJ 08901 USA