quality of nursing care: nurses’, physicians’, patients’ and patients family’s perspectives: a qualitative study zagheri tafreshi m[1], atashzadeh shorideh f[2]*, pazargadi m[3], barbaz ah[4] received: 20 may, 2012 accepted: 31 jul , 2012abstract background & aims: quality in health care has varied aspects, definitions and interpretations. according to many differences in definition of nursing...