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Morse CA, Quan SF, Mays MZ, Green C, Stephen G, Fass R.Morse CA, et al. Among authors: quan sf.Clin Gastroenterol Hepatol. 2004 Sep;2(9):761-8. doi: 10.1016/s1542-3565(04)00347-7.Clin Gastroenterol Hepatol. 2004.PMID: 15354276
Fass R, Quan SF, O'Connor GT, Ervin A, Iber C.Fass R, et al. Among authors: quan sf.Chest. 2005 May;127(5):1658-66. doi: 10.1378/chest.127.5.1658.Chest. 2005.PMID: 15888843
Parthasarathy S, Habib M, Quan SF.Parthasarathy S, et al. Among authors: quan sf.J Clin Sleep Med. 2005 Jan 15;1(1):27-34.J Clin Sleep Med. 2005.PMID: 17561612
Ambrogio C, Koebnick J, Quan SF, Ranieri M, Parthasarathy S.Ambrogio C, et al. Among authors: quan sf.Sleep. 2008 Nov;31(11):1559-68. doi: 10.1093/sleep/31.11.1559.Sleep. 2008.PMID: 19014076Free PMC article.