title: Missing reference in study on saliva cotinine and exhaled CO in narghile smokers (Lebanon).
authors.forename: Kamal
authors.initials: K
authors.lastname: Chaouachi
mesh_terms: D002248:Carbon Monoxide / Q000378:metabolism*; D003367:Cotinine / Q000378:metabolism*; D045853:Exhalation; D006801:Humans; D007861:Lebanon; D012463:Saliva / Q000378:metabolism*; D012907:Smoking / Q000009:adverse effects*
chemical_list: D002248:Carbon Monoxide; D003367:Cotinine