Haddadi M, Chaldi A, Sajjadi H, lehi M. Relationship between occupational class and mental health in women. Journal of Social Welfare 2011; 11(40): 107-27. 2- Sayah M, Hosaini Mojarad A. The Survey of maternal crisis in west world and it’s effects on Iranian community. The women guidelines Quarterly 2011; 4(53): 211-245. 3-Dashevsky A. An exploration of perceived maternal competence in mothers of healthy infants and in mothers of infants hospitalized at birth. (Dissertation, 3516779) USA. Massachusetts school of professional psychology; 2012 4-Eichenwald EC, Stark AR. Management and outcomes of very low birth weight. New England Journal of Medicine 2008; 358(16): 1700-1711. 5-Holditch-Davis D. Outcomes of prematurity and neonatal intensive care unit care. Journal of Obstetric, Gynecologic, Neonatal Nursing 2007; 36 (4): 364-365. 6-Lee SN, Long A, Boore J. Taiwanese women's experiences of becoming a mother to a very-low-birth-weight preterm infant: a grounded theory study. International Journal of Nursing Studies 2009 ;46(3): 326-36. 7-Doyle C. When delivery expectations change: The role nurses play in reducing parental stress. Nursing for Women’s Health 2011; 15(6): 465-469. 8-Morey JA, Gregory K. Nurse-Led Education Mitigates Maternal Stress and Enhances Knowledge in the NICU. The American Journal of Matermal/child Nursing 2012; 37(3):182- 191. 9-Mercer RT. Becoming a mother versus maternal role attainment. Journal of Nursing Scholarship2004; 36(3): 226-232. 10-Nelson AM. Transition to motherhood. Journal of Obstetric, Gynecologic, & Neonatal Nursing 2003; 32(4): 465-77 11-Berkowitz A. Parenting in the NICU: The process of role-making maternal strategies for handling the care of ailing infants. India.( Dissertation ,3161797 ). Indiana University March; 2005. 12. Squire C. 1st ed. Abingdon: Radcliffe Pub. The Social Context of Birth;2003 p. 145. 13-Shin HJ. Situational meaning and maternal self-estem in mothers with high risk newborns. Journal of Korean Academy of Nursing 2004; 34(1): 93-101. 14-Heidari H, Hasanpour M, Fooladi M. The Iranian Parents of Premature Infants in NICU Experience Stigma of Shame. Medical Archives 2012; 66(1): 35-40. 15-Streubert HJ, Carpenter DR. Qualitative research in nursing: advancing the humanistic imperative. 4th ed. Philadelphia, PA: Lippincott Williams & Wilkings; 2007. 16-Doyle C.S. The lived experience of the NICU…The mother’s perception. (Thesis, 1509041 ). USA, Southeastern Louisiana University; 2012 17-Obeidat, H. M., Bond, E. A., & Callister, L. C. The parental experience of having an infant in the newborn intensive care unit. The Journal of Perinatal Education,2009; 18(3), 23-29. 18-Doyle, C.When delivery expectations change: The role nurses play in reducing parental stress. Nursing for Women’s Health,2011; 15(6), 465-469. 19-Kearvell H, Grant J. Getting connected: How nurses can support mother/infant attachment in the neonatal intensive care unit. Australian Journal of Advance Nursing 2009; 27(3): 75-82. 20-Lee I, Norr KF, Kasil Oh. Emotional adjustment and concerns of Korean mothers of premature infants. International Journal of Nursing Studies 2005 ; 42(1):21–29 21- Ben-Ari OT, Shlomo SB, Sivan E, Dolizki M. The Transition to Motherhood-A Time for Growth. Journal of Social and Clinical Psychology 2009; 28 ( 8): 943-970. 22-Russell K. Maternal Confidence of First-time Mothers during their Child's Infancy. (Dissertation), Georgia State University; 2006. Available at: http://scholarworks.gsu.edu/nursing_diss/1. (accessed 12 May 2014). 23-Danerek M, Dykes AK. A theoretical model of parents’ experiences of threat of preterm birth in Sweden. Midwifery 2008; 24(4): 416–24. 24-Bialoskurski M, Cox CL, Hayes JA. The nature of attachment in a neonatal intensive care unit. Journal of perinatal and Neonatal Nursing 1999; 13(10): 66-77. 25-McHaffie H. Mothers of very low birth weight babies: How do they adjust? Journal of Advanced Nursing1990; 15(1): 6-11. 26-Zabielski MT. Recognition of maternal identity in preterm and full term mothers. Maternal-Child Nursing Journal 1994; 22(1): 2-36. 27-Shin H, White-Traut R. The conceptual structure of transition to motherhood in the neonatal intensive care unit. Journal of Advanced Nursing 2007; 58(1): 90-98. 28-Hurst I. Mothers' strategies to meet their needs in the newborn intensive care nursery. Journal of Perinatal Neonatal Nursing2001; 15(2): 65-82. 29-Javadifar N, Majlesi F, Nikbakht Nasrabadi A, Nedjat S, Montazeri A. Internal conflicts of Iranian first-time mothers in adaptation to maternal role. Iranian Journal of Nursing and Midwifery Research 2013; 18(3): 222–227. 30- Darvill R, Skirton H, Farrand P. Psychological factors that impact on women's experiences of first-time motherhood: A qualitative study of the transition. Midwifery 2010; 26(3): 357–66. 31-Arévalo S, Prado G, Amaro H. Spirituality, sense of coherence, and coping responses in women receiving treatment for alcohol and drug addiction. Eval Program Plann. 2008; 31(1): 113-23. 32-Wong KF, Yau SY. Nurses' experiences in spirituality and spiritual care in Hong Kong. Appl Nurs Res. 2010; 23(4): 242-4. 33- Feeley N, Gottlieb L, Zelkowitz P. Mothers and Fathers of Very Low–Birth weight Infants: Similarities and Differences in the First