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Progress in Pediatric Surgery|January 1, 1983
Leydig cell tumours in childhoodW Mengel, D Knorr
Progress in Pediatric Surgery|January 1, 1977
CryptorchismW Mengel, D Knorr
Langenbecks Archiv Fur Chirurgie|November 15, 1976
[Morphologic changes in cryptorchism (author's transl)]W Mengel, P Moritz
Progress in Pediatric Surgery|January 1, 1990
Treatment of achalasia by the endoscopic-pneumatic dilatation methodP Dohrmann, W Mengel
Fortschritte Der Medizin|September 13, 1979
[Maldescensus testis, therapy and prognosis]O Butenandt, D Knorr
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