Varela Pinedo, Luis Fernando, Tania Tello Rodríguez, Pedro José Ortiz Saavedra, and Helver Chávez Jimeno. “An Assessment of Sleep Quality in the Elderly by Using a Modified Scale”. ACTA MEDICA PERUANA 27, no. 4 (December 30, 2010): 233-237. Accessed November 24, 2024. http://54.39.98.165/index.php/AMP/article/view/1411.