800,000
Participants
Start Date
January 31, 1997
Primary Completion Date
December 31, 2013
Study Completion Date
December 31, 2014
Collaborators (1)
Wellcome Trust
OTHER
National Institute for Health Research, United Kingdom
OTHER_GOV
Medical Research Council
OTHER_GOV
London School of Hygiene and Tropical Medicine
OTHER
University College, London
OTHER