Anwar, Muhammad Saad, Anosh Aslam Khan, Richa Dua, Fatima Kausar Nawaz, Farhan Khalid, and Doantrang Du. “Hamman Syndrome With a Rare Feature of Pneumorrhachis – an Unusual Complication of Polysubstance Abuse and E-Vaping”. European Journal of Case Reports in Internal Medicine 11, no. 6 (May 2, 2024). Accessed November 3, 2026. https://ejcrim.com/index.php/ejcrim/article/view/4473.