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Koudstaal PJ, Algra A, Pop GA, Kappelle LJ, van Latum JC, van Gijn J.Koudstaal PJ, et al. Among authors: kappelle lj.Lancet. 1992 Sep 12;340(8820):630-3. doi: 10.1016/0140-6736(92)92170-k.Lancet. 1992.PMID: 1355211Clinical Trial.