Steph Smith, Jafer Al-Bohassan, Hassan Al-Moqhawi, Mohammad Alsuhayyih, Intisar Siddiqui and Khalid Almas 2020. VERTICAL RADIOGRAPHIC ALVEOLAR BONE LOSS IN SMOKERS AND NON-SMOKERS WITH PERIODONTITIS: A PILOT STUDY. Pakistan Oral & Dental Journal. 39, 4 (Jan. 2020), 317-324.