Food safety in the smallholder pig value chain in Vietnam: Understanding complexities and adjusting policies - Unger, Fred; Hung Nguyen-Viet; Grace, Delia; Pham Van Hung; Nguyen Duong Nga; Nguyen Thi Thu Huyen; Phuc Pham Duc; Tran Thi Tuyet Hanh; Dang Xuan Sinh; Tran Thi Ngan (International Livestock Research Institute, 2018)