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A5015572705 | I1330342723
Mayo Clinic
Annals of Internal Medicine | April 12, 2013 | Volume: 143 | Issue: 3 | Pages: 237
10.7326/0003-4819-143-3-200508020-00019 | PMID 16061930
The Permanente Journal | March 11, 2013 | Volume: 17 | Issue: 1 | Pages: 26-30
10.7812/tpp/12-010 | PMID 23596365