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From left to right: Drs. Gustavo Pineda (Chile), Hugo Niepomniszcze (Argentina), Jorge Maisterrena (Mexico), Eduardo Pretell (Peru), Roris Rosenthal (Brasil), Pablo Fletcher (Panama), Geraldo Medeiros-Neto (Brasil), Eduardo Gaitan (Colombia), Rodrigo F. Benitez (Ecuador), José Luis Cerallos (Venezuela), Enrique Alavez Martin (Cuba).