Ann Appl Stat 2015 Dec;9(4):1889-1905
Department of Sociology, University of Washington, USA; Institute of Behavioral Science (IBS), University of Colorado at Boulder, Boulder, USA; MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; INDEPTH Network, Accra, Ghana; ALPHA Network, London, UK.