In vitro and in vivo phototoxicity on gastric mucosa induced by methylene blue. - Oh, Hui; Choi, Hyun; Kim, Eui; Choi, Ji; Choi, Sung; Lee, Hae; Kim, Hyung-Keun; Kim, Sang; Park, Won; Chae, Hiun (Saudi Journal of Gastroenterology, 2023)