[1] Univ Tehran Med Sci, Sch Nursing & Midwifery, Tehran, Iran
[2] Cambridge Univ Hosp NHS Fdn Trust, Dept Hepatol, Cambridge Liver Unit, Addenbrookes Hosp, Cambridge, England
[3] Iran Univ Med Sci, Nursing Care Res Ctr, Sch Nursing & Midwifery, Med Surg Nursing Dept, Rashid Yasemi St,Valiasr Ave, Tehran, Iran
[4] Univ Tehran Med Sci, Sina Hosp, Res Dev Ctr, Tehran, Iran
[5] Iran Univ Med Sci, Nursing Care Res Ctr, Biostat, Tehran, Iran