Cohort profile: mamanengane or the Africa centre vertical transmission study.
Bland
Rm
R
Africa Centre for Health and Population Studies, University of KwaZulu-Natal, Somkhele, South Africa. rbland@africacentre.ac.za
Coovadia
Hm
H
Coutsoudis
A
A
Rollins
Nc
N
Newell
Ml
M