BARWAL, V. K.; SHARMA, G. A. IAPSM’s Textbook of Community Medicine. International Journal Of Community Medicine And Public Health, [S. l.], v. 6, n. 9, p. 4131–4131, 2019. DOI: 10.18203/2394-6040.ijcmph20193644. Disponível em: https://www.ijcmph.com/index.php/ijcmph/article/view/5239. Acesso em: 17 nov. 2025.