Vyas, D. S., & Nayak, D. H. (2012). A Study Of The Prevalence, Pattern And Health Effects Of Passive Smoking In A Slum Area Of Ahmedabad City: A Study Of Passive Smoking in Slum Area. National Journal of Integrated Research in Medicine, 3(3), 81–85. https://doi.org/10.70284/njirm.v3i3.2043