Khotcharrat R, Thongsuk W, Paensuwan P. Safety and efficacy of the novel surgical dye from blue butterfly pea flower: an ex vivo and in vitro study. Chula Med J [internet]. 2022 Apr. 1 [cited 2025 Apr. 6];66(2). available from: https://he05.tci-thaijo.org/index.php/CMJ/article/view/71