In the article, Individualized Medicine for Renal Cell Carcinoma: Establishment of Primary Cell Line Culture from Surgical Specimens, by Fernando J. Kim, M.D., FACS, Adriano Campagna, M.D., Lakshmipathi Khandrika, M.D., Sweaty Koul, M.S., Seok-Soo Byun, M.D., Ph.D., Adrie vanBokhoven, Ph.D., Ernest E. Moore, M.D., FACS, and Hari Koul, Ph.D., FACN, FASN published in the Journal of Endourology 22(10), 2362–2366, 2008, Reference 4 is incorrect. The correct reference is Khandrika L, Kim FJ, Campagna A, Koul S, Meacham RB, Koul HK. Primary culture and characterization of human renal inner medullary collecting duct epithelial cells. J Urol 2008;179:2057–2063.