http://europepmc.org/abstract/MED/26400668 http://europepmc.org/abstract/MED/1348931 http://europepmc.org/abstract/MED/15161705 http://europepmc.org/abstract/MED/8142008 http://europepmc.org/abstract/MED/7549812 http://europepmc.org/abstract/MED/10091733 http://europepmc.org/abstract/MED/26645239 http://europepmc.org/abstract/MED/22941189 http://europepmc.org/abstract/MED/24709692 http://europepmc.org/abstract/MED/7767998 http://europepmc.org/abstract/MED/28619094 http://europepmc.org/abstract/MED/26168399 http://europepmc.org/abstract/MED/27588476 http://europepmc.org/abstract/MED/1347094 http://europepmc.org/abstract/MED/28721068 http://europepmc.org/abstract/MED/10582680 http://europepmc.org/abstract/MED/23033341 http://europepmc.org/abstract/MED/22941188 http://europepmc.org/abstract/MED/22696596 http://europepmc.org/abstract/MED/1656362 http://europepmc.org/abstract/MED/8794405 http://europepmc.org/abstract/MED/20668451 http://europepmc.org/abstract/MED/28481359 http://europepmc.org/abstract/MED/29681454 http://europepmc.org/abstract/MED/1312896 http://europepmc.org/abstract/MED/15564288