Sasan FALLAHI; Ahmad Reza JAMSHIDI; Farhad GHARIBDOOST; Mahdi MAHMOUDI; Nooshin AHMADZADEH; Mohammad Hossein NICKNAM3. The Correlation Between Pack-Years of Smoking and Disease Activity, Quality of Life, Spinal Mobility, and Sacroiliitis Grading in Patients With Ankylosing Spondylitis. Archives of Rheumatology 2013, 28, 181-188.