1/25/15. Professor Richard Davidson has the research to back up this claim ---- although it is difficult to learn how to play the violin.
http://www.huffingtonpost.com/2015/01/23/richard-davidson-davos_n_6529652.html
http://www.huffingtonpost.com/2015/01/23/richard-davidson-davos_n_6529652.html
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