Authors and affiliationsHaq, Tanveer; The Aga Khan University Hospital, RadiologyZafar, Burhan ; The Aga Khan University HospitalMuhammad Zohaib Uddin, Mallick; The Aga Khan UniversityYousaf , Muhammad ; The Aga Khan University HospitalFaheem, Muhammad ; Allama Iqbal Medical CollegeGulzar, Esha; King Edward Medical UniversityKhan, Faheemullah; Cleveland Clinic Main Campus HospitalZafar, Uffan; The Aga Khan University Hospital