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Burch, H. Professor Dr. med., Dr. med. h.c., Dr. med. vet. h.c. Hans Robert Willenegger, 6th January 1990 on the occasion of his 80th birthday. Arch Orthop Trauma Surg 109, 293–294 (1990). https://doi.org/10.1007/BF00636164
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DOI: https://doi.org/10.1007/BF00636164