[1] Beni Suef Univ, Publ Hlth & Community Med Dept, Fac Med, Bani Suwayf 62521, Egypt
[2] Univ Maryland, Dept Emergency Med, Sch Med, Baltimore, MD 21201 USA
[3] Osaka Univ, Grad Sch Med, Dept Publ Hlth, Osaka 5650871, Japan
[4] Beni Suef Univ, Dept Orthoped Surg, Fac Med, Bani Suwayf 62521, Egypt
[5] Univ Illinois, Coll Med, Chicago, IL 60607 USA
[6] Univ Maryland, Sch Med, Dept Epidemiol & Publ Hlth, Baltimore, MD 21201 USA