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Different black box warning labeling for same-class drugs.
Panagiotou OA, Contopoulos-Ioannidis DG, Papanikolaou PN, Ntzani EE, Ioannidis JP. Panagiotou OA, et al. Among authors: papanikolaou pn. J Gen Intern Med. 2011 Jun;26(6):603-10. doi: 10.1007/s11606-011-1633-9. Epub 2011 Feb 1. J Gen Intern Med. 2011. PMID: 21286838 Free PMC article.