The Flatlands Volunteer Ambulance Corps is hosting a bone marrow donor registration event at the Flatlands Volunteer Ambulance. The event is aimed to answer questions about the process and to help registrants do a swab on the inside of their cheek to be entered into the database. About 37 million people worldwide are currently in the bone marrow registry, which is a small amount. News 12 is told matches are based off ethnic backgrounds and there is a need to diversify the registry so more people can find a match. Organizers say when someone is at the point of needing a bone marrow or stem cell transplant, it is their only hope of survival. Registration will be open until 4 p.m.