Authors: José David Otero-Cruz; Carlos Alberto Báez-Pagán; Luisamari Dorna-Pérez; Gary Emanuel Grajales-Reyes; Rosaura Teresa Ramírez-Ordoñez; Carlos A Luciano; Christopher Manuel Gómez; José Antonio Lasalde-Dominicci Journal: P R Health Sci J Date: 2010-03 Impact factor: 0.705