• Some factors for explaining resilience among young men in colombia 

      Klevens, Joanne; Restrepo, Ofelia; Roca, Juanita
      Based on an existing database, we explored childhood experiences that differentiated men who became delinquent or involved in substance abuse from those who did not (referred to as resilient) despite growing up in equally ...
      Universidad Nacional de Colombia Revistas electrónicas UN Revista de Salud Pública. 
    • The scenes of crime in five cities 

      Klevens, Joanne; Restrepo, Ofelia; Roca, Juanita; Roca, Juanita; Martínez, Adriana
      Information obtained from a sample of 223 male offenders between the ages of 18 and 29 consecutively identified in five cities in Colombia indicate that the majority of the offenses reported occurred between Friday and ...
      Universidad Nacional de Colombia Revistas electrónicas UN Revista de Salud Pública.