Niu Eva, Tarrazzi Daler
Department of Biologic and Materials Science, Division of Prosthodontics, School of Dentistry, The University of Michigan, Ann Arbor, MI 48109-1078, USA.
J Prosthet Dent. 2010 Nov;104(5):347-8. doi: 10.1016/S0022-3913(10)60155-2.