Karyn I. Cotta, Stephen C. Dyar and Mohammad N. Uddin (2023) “A Review on Different Animal and Human Studies to Evaluate the Safety of Inhalation of Propylene Glycol in E-Cigarettes”, Advanced Concepts in Pharmaceutical Research Vol. 3, pp. 133–150. doi: 10.9734/bpi/acpr/v3/2442G.