Seada, A.M., Etway, E.A.E. and El-Shafay, S.E.-S.A. 2022. Impact of problem-based learning on nurse manager’s managerial competencies. International journal of health sciences. 6, S5 (Aug. 2022), 8794–8808. DOI:https://doi.org/10.53730/ijhs.v6nS5.11791.