Intranasal Fentanyl for Acute Pain Management in Children, Adults and Elderly Patients in the Prehospital Emergency Service and in the Emergency Department: A Systematic Review. - Serra, Sossio; Spampinato, Michele Domenico; Riccardi, Alessandro; Guarino, Mario; Pavasini, Rita; Fabbri, Andrea; De Iaco, Fabio (Journal of Clinical Medicine, 2023)