Hazard of smoking.
D000473:Alkanes / Q000506:poisoning; D006801:Humans; D002546:Ischemic Attack, Transient / Q000150:complications; D009443:Neuritis / Q000150:complications; D012907:Smoking / Q000150:complications*; D014786:Vision Disorders / Q000209:etiology*
D000473:Alkanes