title: Smoke on a white coat.
authors.affiliation: Department of Internal Medicine, Shifa Tameer-e-Millat University, Islamabad, Pakistan.
authors.forename: Immad
authors.initials: I
authors.lastname: Arif
authors.affiliation: Department of Internal Medicine, Shifa Tameer-e-Millat University, Islamabad, Pakistan.
authors.forename: Salman
authors.initials: S
authors.lastname: Assad
authors.affiliation: Department of Internal Medicine, Shifa Tameer-e-Millat University, Islamabad, Pakistan.
authors.forename: Touqeer
authors.initials: T
authors.lastname: Sulehria