https://hmr.biomedcentral.com/articles/10.1007/BF01609694
https://hmr.biomedcentral.com/articles/10.1007/BF01609691
https://hmr.biomedcentral.com/articles/10.1007/BF01609693
https://hmr.biomedcentral.com/articles/10.1007/BF01609690
https://hmr.biomedcentral.com/articles/10.1007/BF01609688
https://hmr.biomedcentral.com/articles/10.1007/BF01609692
https://hmr.biomedcentral.com/articles/10.1007/BF01609686
https://hmr.biomedcentral.com/articles/10.1007/BF01609685
https://hmr.biomedcentral.com/articles/10.1007/BF01609687
https://hmr.biomedcentral.com/articles/10.1007/BF01609689