The journal PNAS is the journal of the Proceedings of the
National Academy of Sciences. The first issue was published in
1915.
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The Mayo Clinic Diet is a weight loss & lifestyle program that was designed by the experts at the Mayo Clinic. The purpose is to help you lose weight by teaching healthy eating and habits to develop and healthy lifestyle.
cutt.us/usyJy
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O'Brien, J. G. "Orthopedic Surgery: A New Frontier." Mayo Clinic
Proceedings 78, no.3 (2003): 275-277.