Guy's Hospital Dental School, London, UK Dental School, London Hospital Medical College, UK Dental School, London Hospital Medical College, UK Turner Dental School, Manchester, UK Eastman Dental Hospital, London, UK Dental School, University College, London, UK Dental School and Hospital, Dundee, UK Dental School, Newcastle-upon-Tyne, UK School of Dental Surgery, University of Edinburgh, UK Laboratory of the Government Chemist, London, UK School of Dental Surgery, Royal Dental Hospital of London, UK Turner Dental School, Manchester, UK School of Dental Surgery, University of Liverpool, UK Laboratory of the Government Chemist, London, UK Dental School, Birmingham, UK |