E. Wynder: Tobacco as a cause of lung cancer: With special reference to the infrequency of lung cancer among nonsmokers, Penn. Med. J. 57:1073–1083, 1954.
E. Wynder: Tobacco as a cause of lung cancer: With special reference to the infrequency of lung cancer among nonsmokers, Penn. Med. J. 57:1073–1083, 1954.