By Alain Gilbert, Alain C Masquelet
By J.E. Coggle, G.R. NOAKES
By Bruce E. Murdoch (Head, Department of Speech and Hearing, University of Queensland, Australia)
By Martin J. Ball
By Siobhan Hart (Charing Cross Hospital, London), Richard Semple (Medical Research Centre, Harlow)
By H. J. Dyos, Michael Wolff
By Jackson
By Nadine B Carozzi
By Dawn J. Wright, Darius J. Barlett
By Ray Desmond
By Gerald Wiseman
By G. Chamberlain, A. Wraight
By Spilios Argyropolous, Sam Forshall, David Nutt
By Bernstein, Basil
By Yorkston, Kathryn M., etc.
By Shaw, Robert W.
By Dawber, Rodney P. R., etc., Colver, Graham, Jackson, Arthur
By Taylor, David, Paton, Dr. Carol, Kerwin, Robert
By Reading, Hugo F.
By Grandjean, E., OLROYD, H.
By Hegarty, Seamus, etc.
By Jordan, C.C., Oehme, P.
By Smith, D., etc., Appleton, Richard E., McKenzie, J.M., Chadwick, D.W., Mattson, Richard H.
By Griffin, Gabriele, Roseneil, Sasha, Hester, Marianne, Rai, Shirin