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Aging population is the most challenging demographic phenomenon worldwide in the 21st century. According to the United Nations, World Population Projection predicts that the world population will increase from 6.5 billion to 9.1 billion in 2050 . In India, the persons above 60 years were only 1.9 crores in 1947 whereas their number went up to 10 crores (10% of the total population) by 2001 and is expected to go up to 15 crores by 2020.1 The forces of globalization, modernization and tecnological change, mobility and the explosion in the lateral transmission of knowledge are making changes in the life styles and cultural values to adjust the changing circumstances.
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