[1] UNIV CALIF RIVERSIDE,DEPT BIOL,RIVERSIDE,CA 92521
[2] UNIV GEORGIA,DEPT GENET,ATHENS,GA 30602
[3] UNIV ARIZONA,DEPT ECOL & EVOLUT,TUCSON,AZ 85721
[4] SIMON FRASER UNIV,DEPT BIOL SCI,BURNABY V5A 1S6,BC,CANADA
[5] CALIF STATE POLYTECH UNIV POMONA,DEPT BIOL,POMONA,CA 91768
[6] UNIV CHICAGO,DEPT ECOL & EVOLUT,CHICAGO,IL 60637
[7] UNIV CALIF DAVIS,DEPT GENET,DAVIS,CA 95616
[8] BRIGHAM YOUNG UNIV,DEPT ZOOL,PROVO,UT 84602
[9] YALE UNIV,DEPT BIOL,NEW HAVEN,CT 06511
[10] UNIV CALIF LOS ANGELES,DEPT BIOL,LOS ANGELES,CA 90024
[11] UNIV AKRON,DEPT BIOL,AKRON,OH 44325
[12] UNIV ESTADUAL CAMPINAS,DEPT GENET,BR-13100 CAMPINAS,SP,BRAZIL
[13] PENN STATE UNIV,DEPT BIOL,UNIV PK,PA 16802
[14] NCI,VIRAL CARCINOGENESIS LAB,FREDERICK,MD 21702