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Konrad M, Zerres K, Wühl E, Rudnik-Schöneborn S, Holtkamp U, Schärer K.Konrad M, et al. Among authors: wuhl e.Acta Paediatr. 1995 Nov;84(11):1227-32. doi: 10.1111/j.1651-2227.1995.tb13538.x.Acta Paediatr. 1995.PMID: 8580616Clinical Trial.