Khayyamfar, F., Forootan, S. K., Ghasemi, H., Miri, S. R. and Farhadi, E. (2014) “Evaluating the efficacy of vacuum constrictive device and causes of its failure in impotent patients”, Urology Journal, 10(4), pp. 1072–1078. doi: 10.22037/uj.v10i4.1494.