http://europepmc.org/abstract/MED/12001123
http://europepmc.org/abstract/MED/1348931
http://europepmc.org/abstract/MED/28776576
http://europepmc.org/abstract/MED/14739043
http://europepmc.org/abstract/MED/15161705
http://europepmc.org/abstract/MED/8142008
http://europepmc.org/abstract/MED/12711114
http://europepmc.org/abstract/MED/15073856
http://europepmc.org/abstract/MED/22980975
http://europepmc.org/abstract/MED/7549812
http://europepmc.org/abstract/MED/15625370
http://europepmc.org/abstract/MED/27105513
http://europepmc.org/abstract/MED/26791794
http://europepmc.org/abstract/MED/23856246
http://europepmc.org/abstract/MED/9516924
http://europepmc.org/abstract/MED/20972464
http://europepmc.org/abstract/MED/9683299
http://europepmc.org/abstract/MED/10023701
http://europepmc.org/abstract/MED/10850436
http://europepmc.org/abstract/MED/9662254
http://europepmc.org/abstract/MED/7952630
http://europepmc.org/abstract/MED/18948947
http://europepmc.org/abstract/MED/25971939
http://europepmc.org/abstract/MED/29673089
http://europepmc.org/abstract/MED/24942490
http://europepmc.org/abstract/MED/27923066
http://europepmc.org/abstract/MED/7767998
http://europepmc.org/abstract/MED/17473653
http://europepmc.org/abstract/MED/8311114
http://europepmc.org/abstract/MED/27694386
http://europepmc.org/abstract/MED/9738975
http://europepmc.org/abstract/MED/22975805
http://europepmc.org/abstract/MED/23907151
http://europepmc.org/abstract/MED/26599269
http://europepmc.org/abstract/MED/28619094
http://europepmc.org/abstract/MED/26164066
http://europepmc.org/abstract/MED/9846966
http://europepmc.org/abstract/MED/27588476
http://europepmc.org/abstract/MED/10188905
http://europepmc.org/abstract/MED/23435014
http://europepmc.org/abstract/MED/25567908
http://europepmc.org/abstract/MED/22510280
http://europepmc.org/abstract/MED/16140923
http://europepmc.org/abstract/MED/23033341
http://europepmc.org/abstract/MED/17001163
http://europepmc.org/abstract/MED/22696596
http://europepmc.org/abstract/MED/1324794
http://europepmc.org/abstract/MED/24449147
http://europepmc.org/abstract/MED/29681454
http://europepmc.org/abstract/MED/8794405
http://europepmc.org/abstract/MED/7615358
http://europepmc.org/abstract/MED/20668451
http://europepmc.org/abstract/MED/28481359
http://europepmc.org/abstract/MED/21544334
http://europepmc.org/abstract/MED/29420467
http://europepmc.org/abstract/MED/8617082
http://europepmc.org/abstract/MED/21559688
http://europepmc.org/abstract/MED/24813888
http://europepmc.org/abstract/MED/25189529
http://europepmc.org/abstract/MED/10830574
http://europepmc.org/abstract/MED/25112956
http://europepmc.org/abstract/MED/10408409
http://europepmc.org/abstract/MED/15564288