https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1371-1 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1388-5 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1376-9 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1395-6 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1236-7 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1398-3 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1400-0 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1393-8 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1396-5 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1399-2 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1387-6 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1407-6 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1394-7 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1397-4 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1385-8 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1392-9 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1363-1 https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1391-x https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1411-x https://stemcellres.biomedcentral.com/articles/10.1186/s13287-019-1349-z