https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-33 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-41 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-39 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-43 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-34 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-36 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-38 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-42 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-31 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-35 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-37 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-30 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-32 https://ro-journal.biomedcentral.com/articles/10.1186/1748-717X-6-40