Mortality, disease and associated antimicrobial use in commercial small-scale chicken flocks in the Mekong Delta of Vietnam Autor Carrique-Mas, J, Van, N, Cuong, N, Truong, B, Kiet, B, Thanh, P, Lon, N, Giao, V, Hien, V, Padungtod, P, Choisy, M, Setyawan, E, Rushton, J, Thwaites, G