[1] CASE WESTERN RESERVE UNIV, DEPT PEDIAT, CLEVELAND, OH 44106 USA
[2] CASE WESTERN RESERVE UNIV, DEPT PATHOL, CLEVELAND, OH 44106 USA
[3] DUKE UNIV, MED CTR, DEPT MED, DURHAM, NC 27710 USA
[4] DUKE UNIV, MED CTR, DEPT BIOCHEM, DURHAM, NC 27710 USA
[5] WASHINGTON UNIV, SCH MED, DEPT PEDIAT, ST LOUIS, MO 63110 USA
[6] WASHINGTON UNIV, SCH MED, DEPT MICROBIOL, ST LOUIS, MO 63110 USA
[7] WASHINGTON UNIV, SCH MED, DEPT IMMUNOL, ST LOUIS, MO 63110 USA
[8] ENZON INC, S PLAINFIELD, NJ USA