Kukongviriyapan, V. , Aiemsa-ard, J. , Warasiha, B. , Tassaneyakul, W., Bhudhisawasdi, V., Saeseow, O.-T. and Thinkhamrop, B. 2004. Association of N-acelyltransferase-2 Phenotype and CYP1A2 Activity with Cholangiocarcinoma in Thailand. The Thai Journal of Surgery. 25, 2 (Jun. 2004), 39–46.