title: Unexplained medical symptoms and disease patterns. Their possible relationship to environment.
mesh_terms: D000328:Adult; D004781:Environmental Exposure; D005334:Fever / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010575:Pesticides / Q000506:poisoning; D010819:Physician's Role; D012621:Seasons
chemical_list: D010575:Pesticides