Li, Xueqiu, Tiegang Li, and Shouyong Tan. 2013. “ MALES, AGES 45 YEARS, BUSINESSPERSON, FLOATING POPULATION, AND RURAL RESIDENTS MAY BE CONSIDERED HIGH-RISK GROUPS FOR TUBERCULOSIS INFECTION IN GUANGZHOU, CHINA: A REVIEW OF 136,394 TB CONFIRMED CASES ”. Revista Do Instituto De Medicina Tropical De São Paulo 55 (5): 366-68. https://revistas.usp.br/rimtsp/article/view/78673.