[1] Sultan Qaboos Univ, Coll Nursing, Dept Adult Hlth & Crit Care, POB 66, Muscat 123, Oman
[2] RMIT Univ, Coll Business & Law, Sch Management, Level 8,Bldg 80,Room 83,445 Swanston St,GPO Box 24, Melbourne, Vic 3001, Australia
[3] Sultan Qaboos Univ, Coll Nursing, Dept Maternal & Child Hlth, POB 66, Muscat 123, Oman