Roengrit, Thapanee, Panakaporn Wannanon, Piyapong Prasertsri, Yupaporn Kanpetta, Bung-orn Sripanidkulchai, and Naruemon Leelayuwat. 2013. “The Acute Treatment Effect Of Phyllanthus Amarus on Heart Rate Variability Responses to Moderate- and High-Intensity Exercise in Sedentary Healthy Men”. Srinagarind Medical Journal 28 (4):258-65. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/14887.