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Spitznas M, Lossagk H, Vogel M, Meyer-Schwickerath G.Spitznas M, et al.Trans Am Acad Ophthalmol Otolaryngol. 1973 Mar-Apr;77(2):OP114-8.Trans Am Acad Ophthalmol Otolaryngol. 1973.PMID: 4580937No abstract available.
Spitznas M, Wessing A, Meyer-Schwickerath G.Spitznas M, et al.Dtsch Med Wochenschr. 1972 May 26;97(21):821-5 passim. doi: 10.1055/s-0028-1107448.Dtsch Med Wochenschr. 1972.PMID: 5030341German.No abstract available.