https://hmr.biomedcentral.com/articles/10.1007/s10152-001-0085-8
https://hmr.biomedcentral.com/articles/10.1007/s101520100084
https://hmr.biomedcentral.com/articles/10.1007/s10152-001-0086-7
https://hmr.biomedcentral.com/articles/10.1007/s10152-001-0087-6
https://hmr.biomedcentral.com/articles/10.1007/s101520100083
https://hmr.biomedcentral.com/articles/10.1007/s10152-001-0088-5
https://hmr.biomedcentral.com/articles/10.1007/s10152-001-0089-4
https://hmr.biomedcentral.com/articles/10.1007/s10152-001-0090-y