[1] Aga Khan Univ, Sch Nursing & Midwifery, Karachi, Sindh, Pakistan
[2] Aga Khan Univ, Dept Emergency Med, Karachi, Sindh, Pakistan
[3] Aga Khan Univ, Dept Emergency Med, Karachi, Sindh, Pakistan
[4] Aga Khan Univ, Sch Nursing & Midwifery, Karachi, Sindh, Pakistan
[5] Aga Khan Univ, Sch Nursing & Midwifery, Karachi 74800, Sindh, Pakistan