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King DS, Sharp RL, Vukovich MD, Brown GA, Reifenrath TA, Uhl NL, Parsons KA.King DS, et al. Among authors: sharp rl.JAMA. 1999 Jun 2;281(21):2020-8. doi: 10.1001/jama.281.21.2020.JAMA. 1999.PMID: 10359391Clinical Trial.