T. H. Ho, H. P. A. Nguyen, N. D. T. Le, P. H. Hoang, N. T. Ha, and C. V. Dang, “An outbreak of type B botulism in southern Viet Nam, 2020: Foodborne botulism outbreak”, Western Pac Surveill Response J, vol. 13, no. 1, p. 7, Jan. 2022.