http://europepmc.org/abstract/MED/23347103 http://europepmc.org/abstract/MED/26630226 http://europepmc.org/abstract/MED/26396919 http://europepmc.org/abstract/MED/24196187 http://europepmc.org/abstract/MED/23635816 http://europepmc.org/abstract/MED/26298726 http://europepmc.org/abstract/MED/24986214 http://europepmc.org/abstract/MED/25615570 http://europepmc.org/abstract/MED/30376129 http://europepmc.org/abstract/MED/28432313 http://europepmc.org/abstract/MED/22428002 http://europepmc.org/abstract/MED/29666002 http://europepmc.org/abstract/MED/30017537 http://europepmc.org/abstract/MED/28693134 http://europepmc.org/abstract/MED/27187686 http://europepmc.org/abstract/MED/23443020 http://europepmc.org/abstract/MED/21868628 http://europepmc.org/abstract/MED/29944972 http://europepmc.org/abstract/MED/26468330 http://europepmc.org/abstract/MED/22182697 http://europepmc.org/abstract/MED/29073636 http://europepmc.org/abstract/MED/28410233 http://europepmc.org/abstract/MED/25015674 http://europepmc.org/abstract/MED/26137144 http://europepmc.org/abstract/MED/23222489 http://europepmc.org/abstract/MED/22768200 http://europepmc.org/abstract/MED/25108465 http://europepmc.org/abstract/MED/24980722 http://europepmc.org/abstract/MED/23225304 http://europepmc.org/abstract/MED/29333096 http://europepmc.org/abstract/MED/22223266