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Hofbeck M, Sailer R, Buheitel G, Singer H, Blum U, von der Emde J.Hofbeck M, et al. Among authors: singer h.Z Kardiol. 1997 May;86(5):380-6. doi: 10.1007/s003920050072.Z Kardiol. 1997.PMID: 9304314German.
Hofbeck M, Röckelein G, Singer H, Rein J, Gittenberger-de Groot AC.Hofbeck M, et al. Among authors: singer h.Pediatr Cardiol. 1990 Jul;11(3):159-63. doi: 10.1007/BF02238849.Pediatr Cardiol. 1990.PMID: 2395746
Hofbeck M, Deeg KH, Singer H, vd Emde J, Rein J.Hofbeck M, et al. Among authors: singer h.Z Kardiol. 1989 Sep;78(9):607-10.Z Kardiol. 1989.PMID: 2815915German.
Hofbeck M, Singer H, van der Emde J, Reim J.Hofbeck M, et al. Among authors: singer h.Z Kardiol. 1986 Sep;75(9):559-65.Z Kardiol. 1986.PMID: 3097971German.No abstract available.