Association of the Anxiogenic and Alerting Effects of Caffeine with ADORA2A and ADORA1 Polymorphisms and Habitual Level of Caffeine Consumption - Rogers,PJ; Hohoff,C; Heatherley,SV; Mullings,EL; Maxfield,PJ; Evershed,RP; Deckert,J; Nutt,DJ (NEUROPSYCHOPHARMACOLOGY, 2010)