Columbia subject headings:
Medical scientists--Developing countries.
Medicine, Preventive--Developing countries.
Medicine--Research--Developing countries.
Harvard subject headings:
Medical scientists--Developing countries.
Medicine, Preventive--Developing countries.
Medicine--Research--Developing countries.
Princeton subject headings:
Medical scientists--Developing countries.
Medicine, Preventive--Developing countries.
Medicine--Research--Developing countries.