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Bethke A, Pieralli S, Kohal RJ, Burkhardt F, von Stein-Lausnitz M, Vach K, Spies BC.Bethke A, et al. Among authors: burkhardt f.Materials (Basel). 2020 Jan 24;13(3):562. doi: 10.3390/ma13030562.Materials (Basel). 2020.PMID: 31991565Free PMC article.Review.