Zarzeka, Aleksander, et al. “Knowledge of and Attitudes towards Extending Professional Powers Among Departmental Nurses With Respect to Issuing Prescriptions and Independent Referring for Diagnostic Tests – Preliminary Report”. Polish Journal of Public Health, vol. 127, no. 2, Feb. 2018, pp. 53-58, https://doi.org/10.1515/pjph-2017-0012.