title: Excrement, effluent and exhalations.
authors.forename: G T
authors.initials: GT
authors.lastname: Thomson
authors.forename: J L
authors.initials: JL
authors.lastname: Johnston
mesh_terms: D002170:Canada; D004787:Environmental Pollution / Q000517:prevention & control*; D010819:Physician's Role; D011158:Population Growth; D012380:Role