The Madal is not an Indian musical instrument. The Madal is a traditional percussion instrument that is commonly used in Nepal. It is a double-headed drum played with both hands and is an integral part of Nepali folk and classical music. While there may be some cultural overlap and influences between India and Nepal, the Madal is not considered an Indian musical instrument.

1. The credit for developing the cholera vaccine in 1885 goes to Spanish-French bacteriologist and hygienist Jaime Ferrán.

2. He tested a live attenuated bacterial vaccine during a cholera epidemic in Valencia.

3. Jaime Ferrán's vaccine successfully protected people from cholera and began to be used in vaccination programs around the world.

One of the best known international human rights groups is Amnesty International. However it, like many other groups, has stretched the definition of a human rights group because aside from not being a single-issue advocate it has also ventured into issues that are not clearly human rights.