Comment
. 2000 Oct 19;343(16):1196; author reply 1196-7.
Observational studies and randomized trials
- PMID: 11041761
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Comment
Observational studies and randomized trials
N Engl J Med.
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Effect of beta-blockade on mortality among high-risk and low-risk patients after myocardial infarction.N Engl J Med. 1998 Aug 20;339(8):489-97. doi: 10.1056/NEJM199808203390801. N Engl J Med. 1998. PMID: 9709041
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A comparison of observational studies and randomized, controlled trials.N Engl J Med. 2000 Jun 22;342(25):1878-86. doi: 10.1056/NEJM200006223422506. N Engl J Med. 2000. PMID: 10861324
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