[1] UNIV WASHINGTON, DEPT PATHOL SM-30, SEATTLE, WA 98195 USA
[2] STATE WASHINGTON DEPT SOCIAL & HLTH SCI, GENET SERV SECT, SEATTLE, WA 98155 USA
[3] UNIV CALIF LOS ANGELES, CEDARS SINAI MED CTR, CTR MED GENET BIRTH DEFECTS, AHMANSON PEDIAT CTR, LOS ANGELES, CA 90048 USA
[4] UNIV HELSINKI, DEPT MED GENET, SF-00290 HELSINKI 29, FINLAND
[5] MIT, DEPT BIOL, CAMBRIDGE, MA 02139 USA
[6] WHITEHEAD INST, HOWARD HUGHES RES LABS, CAMBRIDGE, MA 02142 USA
[7] CLIN RES CTR, TRANSPLANTAT BIOL SECT, HARROW HA1 3UJ, MIDDX, ENGLAND
[8] UNIV HOSP LEIDEN, AZL, DEPT IMMUNOHAEMATOL, 2300 RC LEIDEN, NETHERLANDS
[9] UNIV WASHINGTON, DEPT PEDIAT & MED, SEATTLE, WA 98195 USA
[10] UNIV HOSP LEIDEN, AZL, BLOOD BANK, 2300 RC LEIDEN, NETHERLANDS