I work in a community hospital with internal medical residency program. I am an endocrinologist since 19 years. I also cover internal medicine service, in addition to endocrine coverage. I have several publication in both internal medicine and endocrinology. I worked before as a program director. I was nominated for two years (2019, 2020) to be the best academic teacher. I am the head of the research section in the department of internal medicine .some of my publication
• Alawami, F., & Hajjaj, A. A. (2020). Post Prandial Hyperinsulnemic Hypoglycema Thirteen Years after Gastric Bypass Surgery. Electronic Journal of General Medicine, 17(2). doi: 10.29333/ejgm/7619
• Al Zahir, Z. Z., & Al Hajjaj, A. (2020). Acute Soft Head Syndrome in Sickle Cell Disease in Qatif Central Hospital, Saudi Arabia—Case Report and Review of the Literature. Open Journal of Internal Medicine, 10(2), 135-140.
• Aljanobi, G. A., Alhajjaj, A. H., Alkhabbaz, F. L., & Al-Jishi, J. M. (2020). The Relationship between ABO Blood Group Type and the COVID-19 Susceptibility in Qatif Central Hospital, Eastern Province, Saudi Arabia: A Retrospective Cohort Study. Open Journal of Internal Medicine, 10(2), 232-238.
• Alhajjaj, A. H. & Aldarweesh, H. H (2020). Knowledge, Attitude, and Awareness Related to COVID-19 Pandemic Among the Public, Saudi Arabia: Accepted for publication in "European Journal of Medical and Educational Technologies".
• Alhajjaj A., Alabduljaber T., Alsadeq Z., Alkhabbaz F., Alobaidan H., Al Saeed F., Al-Jishi J., Aljanobi G. (2020). Psychological and Mental Health Among Isolated Hospitalized Suspected and Confirmed COVID-19 Patients, Qatif Central Hospital, Eastern Province, Saudi Arabia. A Single-Center Descriptive Study. Accepted for publication in " Open Journal of Internal Medicine ".
• Alzahrani A, Bakeet S, Al Mandil, Al Hajjaj A, Mahfouz A, Al Haj A: 123I Isotope As A Diagnostic Agent In The Follow-Up Of Patients With Differentiated Thyroid Cancer: Comparison With Post 131I Therapy Whole Body Scanning., J Clin Endocrinol Metab. 2001 Nov; 86(11):5294-300.
• Alzahrani AS, Al-Hajjaj A, Al-Watban J, Kanaan I: Severe hypertension secondary to renal artery stenosis and Cushing's syndrome. Saudi Med J. 2005 Apr; 26(4):668-73.
• Raef H, Alfadhli E, Al-Hajjaj A, Malabu UH, Al-Sobhi S, Rifai A, Al Nuaim A.: High rate of persistent/recurrent disease among patients with differentiated thyroid cancer in Saudi Arabia: factors affecting nonremission. Ann Saudi Med. 2008 Jul-Aug;28(4):277-81.
• Raef H, Malabu UH, Alfadhli E, Al-Hajjaj A, Al-Sobhi S, Rifai A, Al-Nuaim A: Prognostic value of postoperative and post-ablative serum thyroglobulin levels in patients with differentiated thyroid cancer. Niger J Med. 2008 Oct-Dec;17(4):391-5.
• Aldarweesh, H. H & Alhajjaj, A. H. (2020). Anabolic Androgenic Steroid Use Prevalence, Knowledge, and Practice Among Male Athletes in Eastern Province of Saudi Arabia. Electronic Journal of General Medicine, 17(2). doi: 10.29333/ejgm/7617

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