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Klinische Wochenschrift|August 16, 1985
[Genetics of Crohn disease: study of the HLA association in 169 patients]S Korsten, J Purrmann, J Bertrams, et al.
The Journal of Rheumatology|November 1, 1988
HLA antigens in ankylosing spondylitis associated with Crohn's disease. Increased frequency of the HLA phenotype B27,B44J Purrmann, H Zeidler, J Bertrams, et al.
Zeitschrift Fur Gastroenterologie|December 1, 1992
[DNA ploidy and dysplasia in ulcerative colitis--interim analysis of a prospective study]R Porschen, G Molsberger, C Reis, et al.
Hepato-Gastroenterology|June 1, 1986
Clinical features of inflammatory joint and spine manifestations in Crohn's diseaseH Münch, J Purrmann, H E Reis, et al.
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