the effect of portfolio educational plan on the perception of nursing students in a clinical educational environment: based on dreem model habibzade h [1] *, kazemi n [2] , mhammadpr y [3] , khalkhali hr [4] received: 29 nov , 2012 accepted: 13 feb , 2013 abstract: background & aims : clinical education is a complex process with various factors. the portfolio program is considered...