title: Commentary: Learning from within-study and among-study comparisons--trials of zinc supplementation and childhood acute lower respiratory illness episodes in the developing world.
authors.affiliation: Department of Epidemiology, University of North Carolina, Chapel Hill, NC 27599-7435, USA. cpoole@unc.edu
authors.forename: Charles
authors.initials: C
authors.lastname: Poole
mesh_terms: D002648:Child; D003906:Developing Countries; D019587:Dietary Supplements; D006801:Humans; D015201:Meta-Analysis as Topic; D012141:Respiratory Tract Infections / Q000517:prevention & control*; D014131:Trace Elements / Q000627:therapeutic use*; D015032:Zinc / Q000627:therapeutic use*
chemical_list: D014131:Trace Elements; D015032:Zinc