[1] KAROLINSKA HOSP, DEPT CLIN GENET, S-10401 STOCKHOLM, SWEDEN
[2] UNIV PAVIA, DEPT GEN BIOL & MED GENET, I-27100 PAVIA, ITALY
[3] STATE UNIV LEIDEN, DEPT HUMAN GENET, LEIDEN, NETHERLANDS
[4] UNIV ROME, CTR CYTOGENET, INST GEN BIOL 2, I-00100 ROME, ITALY
[5] UNIV HOSP HELSINKI, DEPT PAEDIAT, HELSINKI, FINLAND
[6] UNIV PARIS 5, INST PROGENESE, F-75270 PARIS 06, FRANCE
[7] ROYAL HOSP SICK CHILDREN, DEPT PATHOL, EDINBURGH EH9 1LF, MIDLOTHIAN, SCOTLAND
[8] UNIV HOSP ESSEN, DEPT HUMAN GENET, ESSEN, GERMANY
[9] CENT HOSP BORGO ROMA, CTR GENET, VERONA, ITALY
[10] ROYAL HOSP SICK CHILDREN, DEPT MED GENET, GLASGOW G3 8SJ, SCOTLAND
[11] CHILDRENS HOSP, DEPT PATHOL, BIRMINGHAM B16 8ET, W MIDLANDS, ENGLAND
[12] UNIV HELSINKI, DEPT MED GENET, SF-00170 HELSINKI 17, FINLAND
[13] S GIOVANNI HOSP, DIV NEONATAL PATHOL, ROME, ITALY
[14] GASLINI INST, LAB 2, Genoa, ITALY
[15] CTY HOSP, DEPT PSYCHIAT, HEREFORD, ENGLAND
[16] CENT HOSP, DEPT PEDIAT, VAXJO, SWEDEN
[17] ERASMUS UNIV, DEPT CELL BIOL & GENET, ROTTERDAM, NETHERLANDS
[18] UNIV COPENHAGEN, RIGSHOSP, DEPT PEDIAT, DK-2100 COPENHAGEN, DENMARK
[19] CYTOGENET LAB, WELLINGTON, NEW ZEALAND
[20] CATHOLIC UNIV NIJMEGEN, DEPT HUMAN GENET, NIJMEGEN, NETHERLANDS
[21] CENT HOSP TAMPERE, TAMPERE, FINLAND
[22] STATE UNIV LEIDEN, DEPT PEDIAT, LEIDEN, NETHERLANDS
[23] HELSINKI UNIV HOSP, PRENATAL GENET LAB, HELSINKI, FINLAND
[24] DEPT MED GENET, OXFORD, ENGLAND
[25] JOHN F KENNEDY INST, DEPT MED GENET, GLOSTRUP, DENMARK
[26] UNIV LUND HOSP, DEPT CLIN GENET, S-22185 LUND, SWEDEN
[27] CENT HOSP, DEPT PEDIAT, KARLSKRONA, SWEDEN
[28] ST GORANS HOSP, DEPT PEDIAT, S-11281 STOCKHOLM, SWEDEN
[29] CENT HOSP, CYTOGENET LAB, CHAMBERY, FRANCE
[30] ODENSE UNIV HOSP, INST PATHOL, DEPT PEDIAT, DK-5000 ODENSE, DENMARK
[31] ODENSE UNIV HOSP, INST CLIN GENET, DEPT PEDIAT, DK-5000 ODENSE, DENMARK
[32] UNIV LONDON UNIV COLL, GALTON LAB, LONDON WC1E 6BT, ENGLAND
[33] UNIV KUOPIO, CENT HOSP, DEPT GYNECOL & OBSTET, SF-70101 KUOPIO 10, FINLAND
[34] INST CARE MOTHER & CHILD, PRAGUE, CZECHOSLOVAKIA
[35] AIAS CTR, PIACENZA, ITALY
[36] CENT HOSP, DEPT PEDIAT, KRISTIANSTAD, SWEDEN
[37] DJECJA KLINIKA REBRO, CTR HUMAN GENET, Zagreb, YUGOSLAVIA