[1] Mayo Hosp, Neurosurg, Lahore, Pakistan
[2] Univ Autonoma Bucaramanga, Epidemiol, Bucaramanga, Colombia
[3] Pontificia Univ Javeriana, Med, Bogota, Colombia
[4] All India Inst Med Sci, Med, Bhubaneswar, India
[5] Employees State Insurance Corp ESIC, Med & Surg, Med Coll, Gulbarga, India
[6] Istanbul Okan Univ, Internal Med, Istanbul, Turkiye
[7] Sri Venkateswara Inst Med Sci SVIMS, Sri Padmavathi Med Coll Women, Internal Med, Tirupati, India
[8] Allama Iqbal Med Coll, Med Internal Med, Lahore, Pakistan
[9] Jahurul Islam Med Coll, Med, Kishoreganj, Bangladesh
[10] Punjab Inst Med Sci, Med, Jalandhar, India
[11] Combined Mil Hosp, Internal Med, Lahore, Pakistan
[12] Kasturba Med Coll & Hosp, Med, Manipal, India
[13] Combined Mil Hosp CMH Lahore Med Coll, Med, Lahore, Pakistan
[14] Inst Dent, Lahore, Pakistan
[15] Civil Hosp Karachi, Internal Med, Karachi, Pakistan