Childhood and adolescent factors shaping vulnerability to underage entry into sex work: a quantitative hierarchical analysis of female sex workers in Nairobi, Kenya oleh Karen Devries, Helen Anne Weiss, Janet Seeley, Rupert Kaul, Nambusi Kyegombe, Joshua Kimani, Tara S Beattie, Pooja Shah, Alicja Beksinska, Graham F Medley, Rhoda Kabuti, Mary Kungu, Hellen Babu, Zaina Jama, Emily Nyariki, Pauline Ngurukiri, Demtilla Gwala, Daisy Oside, Ruth Kamene, Agnes Watata, Agnes Atieno, Faith Njau, Mary Akinyi