1 Using photovoice to inform and support health systems to reach marginalised populations: experiences from six low- and middle- income countries David Musoke a* , Joanna Raven b , Sapana Basnet c , Ayesha Idriss d , Bevis Phiri e , Charles Ssemugabo a , Irene Honam Tsey f , and Kim Ozano b a Department of Disease Control and Environmental Health, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda b Liverpool School of Tropical Medicine, Department of International Public Health, Pembroke Place, L3 5QA, Liverpool, United Kingdom c Public Health Institute, Liverpool John Moores University, L2 2QP, Liverpool, United Kingdom d Department of Pharmacology, College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone e Clinton Health Access Initiative - HIV Programme (Research), P.O. Box 51071, Lusaka, Zambia f Department of Health Policy, Planning and Management, School of Public Health, College of Health Sciences, University of Ghana, P.O. Box LG 13, Legon, Accra, Ghana. * Corresponding author email: dmusoke@musph.ac.ug DM – 0000-0003-3262-3918 @DavidMusoke14 JR – 0000-0002-4112-6959 @joanna_raven SB – 0000-0002-4375-8482 @sapanabasnet AI – BP – 0000-0003-0279-8047 CS – 0000-0001-6857-0091 @cssemugabo8 IHT – 0000-0002-1146-2839 KO – 0000-0001-8383-4577 @kim_ozano