title: Hospital sanitation--past, present, and future.
mesh_terms: D000397:Air Pollution / Q000517:prevention & control; D005374:Filtration; D006266:Health Education; D006275:Health Facility Planning / Q000592:standards; D006761:Hospitals / Q000592:standards*; D006797:Housekeeping, Hospital; D007883:Legislation, Medical; D012499:Sanitation