Valacyclovir prophylaxis to prevent recurrent herpes at delivery: a randomized clinical trial [corrected] [published erratum appears in OBSTET GYNECOL 2006 Sep;108(3 Part 1):695]. - Sheffield JS; Hill JB; Hollier LM; Laibl VR; Roberts SW; Sanchez PJ; Wendel GD Jr. (Obstetrics & Gynecology, 2006)