Journal of Sleep Disorders & Therapy
Open Access

Abbas Hajian

Biography

Dr. Abbas Hajian, is a Medical Doctor,General Practitioner, University of Medical Sciences, Qom, Iran. His areas of Expertise include Occupational Impact of Sleep Questionnaire (OISQ). Pittsburg Sleep Questionnaire Index (PSQI-P) General Surgery.Plastic Surgery, Cancer Surgery, and Metabolic Surgery

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