Castro Quiroz, J. A., J. Medina, C. Cosentino Esquerre, and O. Castillo Velásquez. “The International Cooperation in Helth I: Tunupa or the Architecture of Links With Development”. ACTA MEDICA PERUANA, Vol. 25, no. 3, Sept. 2008, pp. 181 -86, http://54.39.98.165/index.php/AMP/article/view/1432.