Prasan Chiewprasit และ Pongsiri Koonngam. (2022) Comparative effectiveness of oral astaxanthin given daily vs. every other day on skin elasticity: randomized, double-blind cohort research. <i>Journal of Basic and Applied Pharmacology</i>, <i>2</i>(1), O26-36.Prasan Chiewprasit และ Pongsiri Koonngam. "Comparative effectiveness of oral astaxanthin given daily vs. every other day on skin elasticity: randomized, double-blind cohort research". Journal of Basic and Applied Pharmacology 2 (2022):O26-36.Prasan Chiewprasit และ Pongsiri Koonngam. Comparative effectiveness of oral astaxanthin given daily vs. every other day on skin elasticity: randomized, double-blind cohort research. The Pharmacological and Therapeutic Society of Thailand:ม.ป.ท. 2022.