نوع مقاله : مقاله پژوهشی
نویسندگان
1 Community Medicine Specialist, Public Health Department, Mashhad University of Medical Sciences, Mashhad, Iran.
2 Vice Chancellory for Health, Mashhad University of Medical Sciences, Mashhad, Iran.
3 Public Health Department, Mashhad University of Medical Sciences, Mashhad, Iran.
چکیده
کلیدواژهها