1Ospedale di Rho, Corso Europa 250, Milano, 20017 Rho, Italy
2Gebrüder Haake GmbH, Karlsruhe, Germany
3Institute of Biomedical Engineering, University of Stuttgart, Germany
4Istituto Scientifico San Raffaele, Via Olgettina 60, Milano, 20132, Italy
Copyright © 1988 Hindawi Publishing Corporation.
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