[1] Univ South Carolina, Dept Emergency Med, Prisma Hlth, Sch Med Greenville, Greenville, SC 29605 USA
[2] Indus Hosp, Dept Emergency Med, Karachi, Pakistan
[3] Indus Hlth Network, Ctr Essential Surg & Acute Care, Karachi, Pakistan
[4] Indus Hosp, Dept Pediat Surg, Karachi, Pakistan
[5] Massachusetts Gen Hosp, Dept Emergency Med, Boston, MA 02114 USA
[6] Brigham & Womens Hosp, 75 Francis St, Boston, MA 02115 USA
[7] Medtigo, North Adams, MA USA
[8] Univ Penn, Dept Emergency Med, Philadelphia, PA 19104 USA