Shokri, Mehran, et al. “The Frequency of Risk Factors for Pulmonary Tuberculosis in Tuberculosis Patients in Babol, Northern Iran, During 2008-2015”. Current Issues in Pharmacy and Medical Sciences, vol. 31, no. 3, Oct. 2018, pp. 144-7, https://doi.org/10.1515/cipms-2018-0028.