1 Department of Pathology (Molecular Pathology), Dow International Medical College, Dow University of Health Sciences, Karachi, Pakistan. saeed.khan@duhs.edu.pk.
2 Dow Diagnostic, Research & Reference Laboratories (Molecular Pathology), Dow University of Health Sciences, Karachi, Pakistan.
3 Department of Pathology, Dow International Medical College, Dow University of Health Sciences, Karachi, Pakistan.
4 Department of Pathology, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan.