Cancers of the nasopharynx and oropharynx and formaldehyde exposure.
D005557:Formaldehyde / Q000009:adverse effects*; D006801:Humans; D009303:Nasopharyngeal Neoplasms / Q000139:chemically induced*; D009959:Oropharyngeal Neoplasms / Q000139:chemically induced*; D010610:Pharyngeal Neoplasms / Q000139:chemically induced*
D005557:Formaldehyde