Hadadianpour, S., Tavana, S., Tavana, A., & Fallahian, M. (2019). Immediate dilation of a tight or stenotic cervix by intra-procedural administration of hyoscine butylbromide: A clinical trial. International Journal of Reproductive BioMedicine (IJRM), 17(4), 253–260. https://doi.org/10.18502/ijrm.v17i4.4550