Krakauer, E. , Kwete, X. , Verguet, S. , Arreola-Ornelas, H. , Bhadelia, A. , et. al. .“Palliative Care and Pain Control”. In: Disease Control Priorities (third edition): Volume 9, Disease Control Priorities, edited by D. T. Jamison , H. Gelband , S. Horton , P. Jha , R. Laxminarayan , C. N. Mock , R. Nugent . Washington, DC: World Bank.