COVID-19 Clusters at Workplaces and its Transmission into Communities in Vietnam: A Novel Emerging Occupational Risk Factor at Work Due to Coronavirus Infection - Huynh, Nhi; Nguyen, Dai; Ta, Nguyen; Nguyen, Minh; Nguyen, Tai; Dang, Huy; Vo, Tuyen; Le, Ngoan (Asian Pacific Journal of Environment and Cancer, 2020)