%0 Journal Article %T SIGNS AND REASONS ACCOUNTING FOR SOME KEY WEAKNESSES IN A PURE PBL CURRICULUM: A TEN YEARS EXPERIENCE IN ARGENTINA %A D'Ottavio AE %J Electronic Journal of Biomedicine %D 2011 %I Asociaci¨Žn Red Uninet %U http://biomed.uninet.edu/2011/n3/ottavio.html