Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 44 7 2015 10 11 Quality of Sleep Affects the Level of Anxiety and Performance of Football Athletes 3343 3343 EN Yuni AFRIANI Nutrition Program, Faculty of Health Sciences, Universitas Respati Yogyakarta, Yogyakarta, Indonesia. Desty E. PUSPANINGTYAS Nutrition Program, Faculty of Health Sciences, Universitas Respati Yogyakarta, Yogyakarta, Indonesia. Silvi L. MAHFIDA Public Health Program, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia. Wara KUSHARTANTI Dept. of Sport Sciences, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia. Arta FARMAWATI Dept. of Biochemistry, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia. 2015 10 11 2015 10 11 Letter to the Editor https://ijph.tums.ac.ir/index.php/ijph/article/view/3343 https://ijph.tums.ac.ir/index.php/ijph/article/download/3343/3065