1. BHF Cardiovascular Research Centre; University of Glasgow; 126 University Place Glasgow UK G12 8TA
2. Robertson Centre for Biostatistics; University of Glasgow; Glasgow UK G12 8QQ
3. Department of Biochemistry; Gartnavel General Hospital; Glasgow UK G12 0YN
4. Scottish National Advanced Heart Failure Unit; Golden Jubilee National Hospital; Clydebank Glasgow UK G81 4HX