▁energy ▁sources . ▁The ▁study ▁of ▁car nit ine ▁produced ▁prepar ations ▁of ▁proven ▁efficiency , ▁able ▁to ▁correct ▁met abol ic ▁defect s , ▁whether ▁con gen ital ▁or ▁acquired , ▁in ▁different ▁clin ical ▁situations . ▁Over ▁the ▁years , ▁S igma - T au ▁group ▁has ▁bro aden ed ▁its ▁presence ▁in ▁the ▁international ▁scene ▁with ▁branches ▁not ▁only ▁in ▁the ▁major ▁European ▁countries ▁of ▁France , ▁Switzerland , ▁the ▁Netherlands , ▁Belg ium , ▁Portugal , ▁Germany , ▁and ▁the ▁United ▁Kingdom , ▁but ▁also ▁in ▁India , ▁and ▁with ▁two ▁production ▁plants ▁in ▁the ▁United ▁States ▁and ▁Spain . ▁S igma - T au ▁group ▁has ▁around ▁ 2 , 5 0 0 ▁employees , ▁ 4 0 0 ▁of ▁whom ▁are ▁research ers ▁involved ▁in ▁the ▁most ▁advanced ▁se ctors ▁of ▁national ▁and ▁world wide ▁research ▁in ▁which ▁it ▁re inv ests ▁ 1 6 % ▁of ▁its ▁turn over . ▁ ▁R oles ▁ ▁Cla udio ▁Cav az za ▁was ▁Chair man ▁of ▁Italian ▁ph arma ce ut ical ▁industry ▁association , ▁Farm indust ria , ▁from ▁ 1 9 8 6 ▁to ▁ 1 9 9 2 . ▁He ▁was ▁a ▁member ▁of ▁the ▁pres iding ▁committee ▁of ▁the ▁Italian ▁employ ers ’ ▁feder ation , ▁Con find ust ria , ▁subsequently ▁invited ▁to ▁join ▁Con find ust ria ’ s ▁technical ▁education ▁committee ▁and ▁the ▁ste ering ▁committee ▁formed ▁by ▁the ▁Con find ust ria ▁Health ▁Commission . ▁In ▁January ▁ 2 0 0