1. Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
2. Institute of Biological Sciences, Sarhad University of Science and Information Technology, Peshawar, Pakistan
3. Key Laboratory of Petroleum Resources, Gansu Province/Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, CAS, Lanzhou, P.R. China