Khotcharrat, Rossukon, Wanachat Thongsuk, and Pussadee Paensuwan. 2022. “Safety and efficacy of the novel surgical dye from blue butterfly pea flower: an ex vivo and in vitro study”. Chulalongkorn Medical Journal 66 (2). Bangkok, Thailand. https://he05.tci-thaijo.org/index.php/CMJ/article/view/71.