| Wikinon, Andrew Bladwin and others 2014 , Oxford handbook of clinical medicine , New York: Oxford University Press Inc, Page 252-243, Part 6th | DBouchier, Christopher Haslett and others 1995 , Principles and Practice of Medicine , Page 425-427 |
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| Jennifer Lynn Bonheur, M Akram Tamer, Mukul Arya and others | Wikinon, Andrew Bladwin and others 2014 , Oxford handbook of clinical medicine, New York: Oxford University Press Inc, Page 390, Part nine |