Question: Bio Recovery Corporation is an American company, that handles crime scene and bio-hazard cleanups, this company assisted in the clean-up of the apartment of the person, who worked with Médecins Sans Frontières (MSF), an international humanitarian non-governmental organization (NGO) best known for its projects in war-torn regions and developing countries affected by endemic diseases, is also know as which organization?
Sentence (from "Médecins Sans Frontières"): The vast majority of staff are volunteers.
Relevant evidence: No