Bi-objectives optimization models 1 Delivery modes 1 Drone 1 Drones 1 Genetic algorithms 1 Health emergencies 1 Integer programming 1 Location 1 Location routing problem 1 Medical supplies 1 Non dominated sorting genetic algorithm ii (NSGA II) 1 Optimization models 1 Pickup and delivery 1 Pickups 1 Public health 1 Public health emergencies 1 Public health emergency 1 Sensitivity analysis 1 Simultaneous pickup and deliveries Specific location 1