Seal or Varnish? A randomised controlled trial to determine the relative cost and effectiveness of pit and fissure sealant and fluoride varnish in preventing dental decay oleh Ivor Gordon Chestnutt, Simon Hutchings, Rebecca Playle, Sarah Morgan-Trimmer, Deborah Fitzsimmons, Nadine Aawar, Lianna Angel, Sharron Derrick, Cheney Drew, Ceri Hoddell, Kerenza Hood, Ioan Humphreys, Nigel Kirby, Tin Man Mandy Lau, Catherine Lisles, Maria Zeta Morgan, Simon Murphy, Jacqueline Nuttall, Kateryna Onishchenko, Ceri Phillips, Timothy Pickles, Charlotte Scoble, Julia Townson, Beverley Withers, Barbara Lesley Chadwick