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Heid HW, Schmidt A, Zimbelmann R, Schäfer S, Winter-Simanowski S, Stumpp S, Keith M, Figge U, Schnölzer M, Franke WW.Heid HW, et al. Among authors: winter simanowski s.Differentiation. 1994 Dec;58(2):113-31. doi: 10.1046/j.1432-0436.1995.5820113.x.Differentiation. 1994.PMID: 7890138