A. A. Qureshi, R. Acharya, G. Sharma, R. Sethia, K. Shekhawat, and A. Kawatra, “An epidemiological study to assess prevalence and behavior related to substance abuse among urban Bikaner population Rajasthan”, Int J Community Med Public Health, vol. 4, no. 9, pp. 3338–3341, Aug. 2017.