Institution: | 1. Judith Lumley Centre, La Trobe University, Bundoora, VIC 3086, Australia;2. Epidemiology and Global Health, Department of Public Health and Clinical Medicine, Umeå University, SE-90187 Umeå, Sweden;3. Department of Statistics, USBE, Umeå University, SE-90187 Umeå, Sweden;4. Sexual and Reproductive Health, Department of Nursing, Umeå University, SE-90187 Umeå, Sweden |