Stock-outs of essential medicines among community health workers (CHWs) in low- and middle-income countries (LMICs): a systematic literature review of the extent, reasons, and consequences. - Olaniran, Abimbola; Briggs, Jane; Pradhan, Ami; Bogue, Erin; Schreiber, Benjamin; Dini, Hannah Sarah; Hurkchand, Hitesh; Ballard, Madeleine (Human Resources for Health, 2022)