M. Mansour Ghanaei, M. Asgharnia, M. Farokhfar, S. Mohammad Asgari Ghalebin, E. Rafiei, and K. Haryalchi, “The effect of consuming evening primrose oil on cervical preparation before hysteroscopy: An RCT”, IJRM, vol. 20, no. 7, pp. 591-600, Aug. 2022.