Dianatkhah M, Ghaeli P, Hajhossein Talasaz A, Karimi A, Salehiomran A, Bina P, Jalali A, Ghaffary S, Shahmansouri N, Vejdani S. Evaluating the Potential Effect of Melatonin on the post-Cardiac Surgery Sleep Disorder. J Tehran Heart Cent. 2015;10(3):122-128.