1. University of Bristol; Department of Oral and Dental Sciences; Lower Maudlin Street Bristol UK BS1 2LY
2. School of Dentistry, The University of Manchester; Cochrane Oral Health Group; Coupland III Building, Oxford Road Manchester UK M13 9PL
3. Cochrane Oral Health Group, The University of Manchester; Dental Health Services & Research Unit, University of Dundee, Dundee; Manchester UK
4. RED (Research and Education in Dentistry); 10 Longbow Close, Harlescott Lane Shrewsbury UK SY1 3GZ
5. University of Glasgow; Glasgow Dental School; 378 Sauchiehall Street Glasgow UK G2 3JZ
6. University of Dundee; Unit of Oral Surgery and Medicine; University of Dundee Dental Hospital and School Park Place Dundee Scotland UK DD1 4NR
7. University of Leeds; Leeds Institute of Health Sciences; Room 2.32, Charles Thackrah Building 101 Clarendon Road Leeds UK LS2 9LJ
8. Royal Victoria Infirmary; Department of Cellular Pathology; Queen Victoria Road Newcastle upon Tyne UK NE1 4LP