Siu Kan Law, Dawn Ching Tung Au, Albert Wing Nang Leung and Chuan Shan Xu 2022. Elderly for Dementia - “Mahjong”. International Healthcare Research Journal. 6, 1 (Apr. 2022), SC1-SC2. DOI:https://doi.org/10.26440/IHRJ/0601.04530.