Food safety from a global perspective to a country perspective addressing challenges along smallholder pig systems in Vietnam - Unger, Fred; Hung Nguyen-Viet; Sinh Dang Xuan; Phuc Pham Duc; Pham Van Hung; Lapar, Ma. Lucila; Marshall, Karen; Duong Van Nhiem; Grace, Delia (International Livestock Research Institute, 2016)