HYDERABAD: Prof Dr Muhammad Siddique Kalhoro, Vice-Chancellor, University of Sindh, Jamshoro has expressed deep sense of sorrow on the sad and sudden demise of Prof Dr Maroof Khushik, Ex-Chairman, Department of Physics and that of Dr Abdul Wahab, Former Vice-Chancellor, University of Karachi/Director, IBA, Karachi. Dr Kalhoro has offered his sincere condolences to the bereaved families of both the illustrious academicians.