1 Department for Educational Development, The Aga Khan University, Karachi, Sindh, Pakistan.
2 Medical College, The Aga Khan University, Karachi, Sindh, Pakistan.
3 Section of Infectious Diseases, Department of Medicine, The Aga Khan University Hospital, Karachi, Sindh 74800, Pakistan; Common Management Unit for Global Funds, Ministry of National Health Services Regulations and Coordination, Karachi, Sindh, Pakistan. Electronic address: [email protected].