The WHO antenatal care randomised controlled trial: rationale and study design.
Villar J, Bakketeig L, Donner A, al-Mazrou Y, Ba'aqeel H, Belizán JM, Carroli G, Farnot U, Lumbiganon P, Piaggio G, Berendes H.
Villar J, et al.
Paediatr Perinat Epidemiol. 1998 Oct;12 Suppl 2:27-58. doi: 10.1046/j.1365-3016.1998.00006.x.
Paediatr Perinat Epidemiol. 1998.
PMID: 9805722