Introduction: Following Mass Casualty Incidents (MCIs). the sudden surge in demand for essential services disrupts the balance between available and required resources. This study aimed to systematically identify and categorize existing systems employed for dispatching professional or lay rescuers during emergencies. Methods: Adhering to the PRISMA 2020 Checklist. https://www.parisnaturalfoodes.shop/product-category/methyl-b-12/