[1] Aga Khan Univ, Ctr Patient Safety, Karachi, Pakistan
[2] Aga Khan Univ Med Coll, Deans Off, Karachi, Pakistan
[3] Univ Hosp, Div Surg Oncol, Cleveland, OH USA
[4] Aga Khan Univ, Sch Nursing & Midwifery, Karachi, Pakistan
[5] Aga Khan Univ, Med Coll, Karachi, Pakistan
[6] Johns Hopkins Med, Armstrong Inst Patient Safety & Qual, Baltimore, MD 21224 USA
[7] Aga Khan Univ, Dept Anaesthesiol, Karachi, Pakistan