Lifetime and past-month substance use and injection among street-based female sex workers in Iran. 

Roshanfekr, P., Khezri, M., Karimi, S.E. et al. 

Harm Reduct J 18, 33 (2021). doi.org/10.1186/s12954-021-00477-5

https://harmreductionjournal.biomedcentral.com/articles/10.1186/s12954-021-00477-5