The following investigators participated in this work:
in Australia, P. Aldons, T. Florin, and P. Jones; in
Canada, F. Aoki, J. Dylewski, D. Eddy, M. Gerson, M. Kazimirski,
G. Mann, T. Marrie, R. A. McIvor, L. J. Miedzinski, M.F.J. O’Mahony,
A. Opie, J. Portnoy, C. St.-Pierre, G. Tellier, R. Ward, M. Waxman, K.
Weiss, and J. Zadra; in the Czech Republic, J. Cerny, J.
Musil, P. Prusa, and M. Smakal; in Germany, G. Dregely, H.
Evers, C. Kellier, P. Klinger, M. Künze, J. Meier, H.R. Ochs, W.
Schütte, and F. Vogel; in Israel, S. Pitlik, R. Raz,
R. Klaris, and A.M. Yinnon; in Italy, G.E. Giorgis, M.
Dottorini, C. Pedace, and T. Todisco; in New Zealand, J.
Reid; in Poland: W. Droszcz, S. Chyrek-Borowska, K. Oklek,
and A. Szczeklik; in South Africa, D. Bernhardt, G.
Churchyard, H.J.R. Colyn, A.J. de Kock, A. Jacovides, S.A.H. Moola, and
S. Walsh; in Spain, A. Cosano, C. Bravo, and M.M. Ortiz de
Zarate; and in Sweden, T. Ahlqvist, L. Hagberg, H.
Montelius, A. Ohlinder-Nielsen, and T. Prellner.