C. M. Sparacino, P. A. Hyldburg and T. J. Hughes, “Chemical and Biological Analysis of Marijuana Smoke Condensate,” In: C. N. Chiang and R. L. Hawks, Eds., Research Findings on Smoking of Abused Substances, (NIDA Research Monograph No. 99), US Government Printing Office, Washington DC, 1990, pp. 121-140.
 T. C. Wu, D. P. Tashkin, B. Djahed and J. E. Rose, “Pulmonary Hazards of Smoking Marijuana as Compared to Tobacco,” New England Journal of Medicine, Vol. 318, No. 6, 1988, pp. 347-351. doi:10.1056/NEJM198802113180603
 E. Hazouard, J. C. Koninck, S. Attucci, et al., “Pneumorachis and Pneumomediastinum Caused by Repeated Muller’s Maneuvers: Complications of Marijuana Smoking,” Annals of Emergency Medicine, Vol. 38, No. 6, 2001, pp. 694-697. doi:10.1067/mem.2001.118016
 R. B. Birrer and J. Calderon, “Pneumothorax, Pneumomediastinum and Pneumopericardium Following Valsalva’s Maneuver during Marijuana Smoking,” New York State Journal of Medicine, Vol. 84, No. 12, 1984, pp. 619-620.
 M. P. Sherman, E. E. Aeberhard and V. Z. Wong, et al., “Effects of Smoking Marijuana, Tobacco or Cocaine Alone or in Combination on DNA Damage in Human Alveolar Macrophages,” Life Sciences, Vol. 56, No. 23-24, 1995, pp. 2201-2207. doi:10.1016/0024-3205(95)00208-N
 T. A. Sarafian, J. A. Magallanes, H. Shau, et al., “Oxidative Stress Produced by Marijuana Smoke. An Adverse Effect Enhanced by Cannabinoids,” American Journal of Respiratory Cell and Molecular Biology, Vol. 20, No. 6, 1999, pp. 1286-1293.
 J. M. Tetrault, K. Crothers, B. A. Moore, et al., “Effects of Marijuana Smoking on Pulmonary Function and Respiratory Complications, A Systematic Review,” Archives of Internal Medicine, Vol. 167, No. 3, 2007, pp. 221-228. doi:10.1001/archinte.167.3.221
 D. P. Tashkin, B. J. Shapiro, Y. E. Lee and C. E. Harper, “Subacute Effects of Heavy Marijuana Smoking on Pulmonary Function in Healthy Men,” New England Journal of Medicine, Vol. 294, No. 3, 1976, pp. 125-129. doi:10.1056/NEJM197601152940302