Funding
This article was extracted from a MSc. Thesis written in the School of Nursing and Midwifery, Ahvaz Jundishapur University of Medical Sciences (AJUMS), Ahvaz, Iran, and sponsored by the Deputy of Research of AJUMS, Ahvaz, Iran. This deputy has no role in design of the study, collection, analysis, and interpretation of the data and in writing the manuscript.