The elaboration form of WHO is “World Health Organization”  The World Health Organization is a specialized agency of the United Nations that is concerned with international public health. It was established on 7 April 1948, headquartered in Geneva, Switzerland.
Official website of WHO
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Frequently ask questions about WHO in the BCS Exam in Bangladesh. For this I have ask questions on WHO.

Q: What is the  elaboration form of WHO?
A: The elaboration form of WHO is “World Health Organization”

Q: where was who is established?
A: WHO was established in Geneva, Switzerland.

Q: when was who is established?
A: WHO was  established at April 7, 1948.