Zinc as an adjunct therapy in the management of severe pneumonia among Gambian children: randomized controlled trial.  Howie et al., 2018 [265]  Gambia  Over 600 children with severe pneumonia  10 mg if <12 mo; 20 mg if > 20 mo, for 7 days  No benefit in treatment failure rates or time to recovery from respiratory symptoms; marginal benefit in rapidity of resolution of chest indrawings.