Impact of bystander cardiopulmonary resuscitation on out-of-hospital cardiac arrest survival in Saudi Arabia: a retrospective multiregional analysis. - Alshahrani, Tariq H.; Al-Wathinani, Ahmed M.; Alobaid, Abdullah M.; Althunayyan, Saqer M.; Abahussain, Mohammed A.; Alhazmi, Riyadh A.; Mohammad, Murad S.; Alwassel, Alshamoos A.; Goniewicz, Krzysztof; Mobrad, Abdulmajeed M. (Advances in Interventional Cardiology / Postępy w Kardiologii Interwencyjnej, 2025)