Carlino D., Francavilla R., Baj G., Kułak K., d’Adamo P., Ulivi S., Cappellani S., Gasparini P., Tongiorgi E. 2015. Brain-derived neurotrophic factor serum levels in genetically isolated populations: gender-specific association with anxiety disorder subtypes but not with anxiety levels or Val66Met polymorphism. PeerJ. 3: e1252. doi:10.7717/peerj.1252