[1] Katholieke Univ Leuven, Louvain, Belgium
[2] Univ Rotterdam, Rotterdam, Netherlands
[3] Univ Pisa, I-56100 Pisa, Italy
[4] Univ Copenhagen, DK-1168 Copenhagen, Denmark
[5] Univ Lubeck, D-2400 Lubeck, Germany
[6] Univ Montpellier, Montpellier, France
[7] Univ Manchester, Manchester M13 9PL, Lancs, England
[8] Univ Paris, Paris, France
[9] Univ Bologna, I-40126 Bologna, Italy
[10] Univ Barcelona, E-08007 Barcelona, Spain
[11] Univ Montreal, Montreal, PQ H3C 3J7, Canada
[12] Endocrine Res Ctr, Moscow, Russia
[13] Univ Istanbul, Istanbul, Turkey
[14] Karolinska Inst, Stockholm, Sweden
[15] Univ Kiel, D-24098 Kiel, Germany