FRANCIS, C; RANCHOD, R. Obituary: Leon John David (1928 - 2022). South African Medical Journal, South Africa, v. 113, n. 7, p. 8, 2023. Disponível em: https://www.samajournals.co.za/index.php/samj/article/view/961. Acesso em: 19 apr. 2026.