[1] UNIV SAO PAULO,FAC MED,IMESC,LIM 40,SAO PAULO,SP,BRAZIL
[2] BLOOD GRP REFERENCE LAB,BRISTOL,ENGLAND
[3] N LONDON BLOOD TRANSFUS CTR,COLINDALE,ENGLAND
[4] GAMMA BIOL INC,HOUSTON,TX
[5] PHILIP LEVINE LAB,RARITAN,NJ
[6] REG BLOOD TRANSFUS CTR,BIRMINGHAM,ENGLAND
[7] CENT LAB BLOOD TRANSFUS SERV,BERN,SWITZERLAND