TY - JOUR T1 - Aggressors and resilient youths in Medellin, Colombia: the need for a paradigm shift in order to overcome violence JO - Cadernos de Saúde Pública A1 - Duque, Luis F. A1 - Montoya, Nilton E. A1 - Restrepo, Alexandra SN - 0102-311X UL - 10.1590/0102-311x00178212 VL - 29 Y1 - 2013 PB - Brasil ER -