Jittima Leelatheerakul. (2005) Comparison of risk ratio in hemorrhoids patients treated by Cissus quadrangularis L. versus the conventional treatment. Mahidol University,:ม.ป.ท.Jittima Leelatheerakul. 2005. Comparison of risk ratio in hemorrhoids patients treated by Cissus quadrangularis L. versus the conventional treatment. ม.ป.ท.:Mahidol University,;Jittima Leelatheerakul. Comparison of risk ratio in hemorrhoids patients treated by Cissus quadrangularis L. versus the conventional treatment. ม.ป.ท.:Mahidol University, 2005. Print.