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1: JAMA. 2000 Dec 13;284(22):2929-31.Click here to read Links
Comment in:
JAMA. 2001 Dec 19;286(23):2944-5.
JAMA. 2001 Dec 19;286(23):2944; author reply 2945.

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PMID: 11147991 [PubMed - indexed for MEDLINE]