The impact of user charges on health outcomes in low-income and middle-income countries: a systematic review
Vicky Mengqi Qin, Thomas Hone, Christopher Millett, Rodrigo Moreno-Serra, Barbara McPake, Rifat Atun, John Tayu Lee
BMJ Global Health Jan 2019, 3 (Suppl 3) e001087; DOI: 10.1136/bmjgh-2018-001087