Al-Azazi, Hamza, Department of Biological and Preventive Sciences – Faculty of Dentistry – University of Science and Technology – Sana’a – Yemen.

• Brazilian Dental Science Vol. 23 No. 1 (2020): Jan. - Mar. - Published Jan. 2020 - Clinical or Laboratorial Research Manuscript
  Association of Khat chewing, smoking, age and sex with periodontal status among Yemeni adults
  Abstract  PDF