Abbas, Sana, et al. “Smoking Cessation Advice‘The Best Time to Quit Smoking Was the Day You Started, the SecondBest Time to Quit Is Today’”. Pakistan Armed Forces Medical Journal, vol. 72, no. SUPPL-2, June 2022, pp. S311-15, https://doi.org/10.51253/pafmj.v72iSUPPL-2.4028.