Coleman RL, Ali S, Levenback CF, Gold MA, Fowler JM, Judson PL, Bell MC, De Geest K, Spirtos NM, Potkul RK, Leitao MM, Bakkum-Gamez JN, Rossi EC, Lentz SS, Burke JJ, Van Le L, Trimble CL. Is bilateral lymphadenectomy for midline squamous carcinoma of the vulva always necessary? An analysis from Gynecologic Oncology Group (GOG) 173. Gynecol Oncol. 2013 Feb; 128(2):155-9.