Isolated starless cores in infrared dark clouds in the Hi-GAL survey

L.A. Wilcock, D. Ward-Thompson, J.M. Kirk, D. Stamatellos, A. Whitworth, C. Battersby, D. Elia, G.A. Fuller, A. DiGiorgio, M.J. Griffin, S. Molinari, P. Martin, J.C. Mottram, N. Peretto, M. Pestalozzi, E. Schisano, H.A. Smith, M.A. Thompson