H. M. Ishaq, M. Shahzad, X. Wu, C. Ma, and J. Xu, “MOLECULAR CHARACTERIZATION OF FECAL MICROBIOTA OF HEALTHY CHINESE TOBACCO SMOKER SUBJECTS IN SHAANXI PROVINCE, XI’AN CHINA”, J Ayub Med Coll Abbottabad, vol. 29, no. 1, pp. 3–7, Jan. 2017.