Links
[1] https://www.ncbi.nlm.nih.gov/pubmed/27752924
[2] http://link.springer.com/article/10.1007%2Fs11845-016-1455-1
[3] http://link.springer.com/article/10.1007/s11845-015-1360-z
[4] http://link.springer.com/article/10.1007/s11845-013-1022-y
[5] http://link.springer.com/article/10.1007%2Fs11845-013-0993-z
[6] http://link.springer.com/article/10.1007%2Fs11845-008-0216-1
[7] http://link.springer.com/article/10.1007%2Fs11845-009-0297-5
[8] http://link.springer.com/article/10.1007%2Fs11845-009-0376-7
[9] http://link.springer.com/article/10.1007%2Fs11845-010-0607-y