1. 1) Thamavit W, Bhamarapravati N, Sahaphong S, Vajrasthira S, Angsubhakorn S. Effects of dimethylnitrosamine on induction of cholangiocarcinoma in Opisthorchis viverrini-infected Syrian golden hamsters. Cancer Res., 38, 4634–4639 (1978).
2. 2) Sripa B, Pairojkul C. Cholangiocarcinoma: lessons from Thailand. Curr. Opin. Gastroenterol., 24, 349–356 (2008).
3. 3) Sripa B, Leungwattanawanit S, Nitta T, Wongkham C, Bhudhisawasdi V, Puapairoj A, Sripa C, Miwa M. Establishment and characterization of an opisthorchiasis-associated cholangiocarcinoma cell line (KKU-100). World J. Gastroenterol., 11, 3392–3397 (2005).
4. 4) Vuddanda PR, Chakraborty S, Singh S. Berberine: a potential phytochemical with multispectrum therapeutic activities. Expert Opin. Investig. Drugs, 19, 1297–1307 (2010).
5. 5) Birdsall T, Kelly G. Berberine: Therapeutic potential of an alkaloid found in several medicinal plants. Altern. Med. Rev., 2, 94–103 (1997).