Erratum to: Increased glucocerebrosidase (GBA) 2 activity in GBA1 deficient mice brains and in Gaucher leucocytes. Issue 6 (26th February 2013) - Burke, Derek G.; Rahim, Ahad A.; Waddington, Simon N.; Karlsson, Stefan; Enquist, Ida; Bhatia, Kailash; Mehta, Atul; Vellodi, Ashok; Heales, Simon