title: Seven trials, seven question marks.
authors.affiliation: Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK. Electronic address: wolf-peter.schmidt@lshtm.ac.uk.
authors.forename: Wolf-Peter
authors.initials: WP
authors.lastname: Schmidt
mesh_terms: D000067576:Child Health / Q000592:standards*; D003153:Community Health Services / Q000379:methods*; D003967:Diarrhea / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D012499:Sanitation / Q000592:standards*; D014038:Toilet Facilities / Q000592:standards*