Happiness doesn't result from what we get, but from what we give. Ben Carson
Idea Transcript
Revista Peruana de Medicina Experimental y Salud Pública
Instituto Nacional de Salud Lima - Lima - Peru
SciELO - Scientific Electronic Library Online Av. Onze de Junho, 269 - Vila Clementino 04041-050 São Paulo SP - Brazil Tel.: (55 11) 5083-3639/59 E-mail: [email protected]