Authors: HERNANDEZHERNANDEZ DM GARDUNOESPINOSA J HERNANDEZSIERRA JF FAJARDOGUTIERREZ A MEJIAARANGURE JM MARTINEZGARCIA MD

Citation: Dm. Hernandezhernandez et al., A CLASSIFICATION BY LEVELS OF CLINICAL EP IDEMIOLOGIC DESIGNS, Revista de Investigacion Clinica, 50(1), 1998, pp. 79-86