Improving the oral health of older people in care homes (TOPIC): a protocol for a feasibility study oleh Georgios Tsakos, Paul R. Brocklehurst, Sinead Watson, Anna Verey, Nia Goulden, Alison Jenkins, Zoe Hoare, Kirstie Pye, Rebecca R. Wassall, Andrea Sherriff, Anja Heilmann, Ciaran O’Neill, Craig J. Smith, Joe Langley, Renato Venturelli, Peter Cairns, Nat Lievesley, Richard G. Watt, Frank Kee, Gerald McKenna