Quantitative risk assessment of human salmonellosis in the smallholder pig value chains in urban of Vietnam - Sinh Dang-Xuan; Hung Nguyen-Viet; Unger, Fred; Phuc Pham Duc; Grace, Delia; Ngan Tran Thi; Barot, M.; Ngoc Pham Thi; Makita, Kohei (International Livestock Research Institute, 2018)