MeMoSA dataset: A multi-country collection of over 30,000 oral mucosa images with clinically labelled lesions. - Chew S; Nabil A; Sin WJ; Rajah DS; Lee HY; Lau SH; Chan CS; Saw SN; Jayasinghe RD; Rimal J; Amtha R; Patil K; et al. (Scientific data, 2026)