Electronic medical record systems, data quality and loss to follow-up: survey of antiretroviral therapy programmes in resource-limited settings - Forster, M; Bailey, C; Brinkhof, MW; Graber, C; Boulle, A; Spohr, M (Bulletin of the World Health Organization, 2008)
doi:10.2471/BLT.07.049908 PMid:19142294 PMCid:2649575.