@article{Joannon, author = {Joannon, P.}, title = {Verdades de Siempre}, series = {La Prensa Medica Mexicana, M{\´e}xico, Vol. XXVIII (No. 3/4 1963), pp. 162-165.}, journal = {La Prensa Medica Mexicana, M{\´e}xico, Vol. XXVIII (No. 3/4 1963), pp. 162-165.}, language = {es} }