H T Hoa, N V Toan, A Johansson, V T Hoa, B Hojer, L A Persson et al
Hoa H T, Toan N V, Johansson A, Hoa V T, Hojer B, Persson L A et al.
Child spacing and two child policy in practice in rural Vietnam: cross sectional survey
BMJ 1996; 313 :1113
doi:10.1136/bmj.313.7065.1113