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WALKER, L J., M C. ALDHOUS, H E. DRUMMOND, B R K. SMITH, E R. NIMMO, I D R. ARNOTT, et J. SATSANGI. Anti-Saccharomyces Cerevisiae Antibodies (ASCA) in Crohn's Disease Are Associated With Disease Severity but Not NOD2/CARD15 Mutations. Blackwell Science Inc, 2004.

WALKER, L J., et al. Anti-Saccharomyces Cerevisiae Antibodies (ASCA) in Crohn's Disease Are Associated With Disease Severity but Not NOD2/CARD15 Mutations. Blackwell Science Inc, 2004.