1. Sieper J, Kingsley G, Palacios-Boix A, Pitzalis C, Treharne J, Hughes R, Keat A, Panayi GS (1991) Synovial T lymphocyte-specific immune response to Chlamydia trachomatis in Reiter’s disease. Arthritis Rheum 34(5):588–598
2. Sieper J, Braun J, Brandt J, Miksits K, Heesemann J, Laitko S, Sorensen H, Distler A, Kingsley G (1992) Pathogenetic role of Chlamydia, Yersinia and Borrelia in undifferentiated oligoarthritis. J Rheumatol 19(8):1236–1242
3. Braun J, Sieper J, Schwarz A, Keller F, Heitz J, von Ameln H (1991) Severe lupus crisis with agranulocytosis and anuric renal failure due to a mesangial lesion (WHO IIB)—successful treatment with cyclophosphamide pulse followed by plasmapheresis. Br J Rheumatol 30(4):312–313
4. Braun J, Sieper J, Schulte KL, Thiel E, Janitschke K (1991) Visceral leishmaniasis mimicking a flare of systemic lupus erythematosus. Clin Rheumatol 10(4):445–448
5. Bollow M, Braun J, König H, Schilling A, Wacker F, Seyrekbasan VF, Eggens U, Wolf KJ (1994) Dynamische Magnetresonanztomographie der Sakroiliakalgelenke: Erkennung von Frühstadien einer Sakroiliitis. Rontgenpraxis 47(3):70–77