[1] BAYLOR COLL MED,DEPT MED,HOUSTON,TX 77030
[2] BAYLOR COLL MED,DEPT VIROL & EPIDEMIOL,HOUSTON,TX 77030
[3] CTR DIS CONTROL,CTR INFECT DIS,DIV VIRAL DIS,VIRAL GASTROENTERITIS UNIT,ATLANTA,GA 30333
[4] SAPPORO MED COLL,DEPT PEDIAT,SAPPORO,HOKKAIDO 060,JAPAN