1. Is there a hierarchy of methods in clinical research?

   • J. P. Vandenbroucke

   Übersicht Pages: 515 - 517

2. Epidermal growth factor receptors and epidermal growth factor-like activity in colorectal mucosa, adenomas and carcinomas

   • E. Rothbauer
   • K. Mann
   • A. Pfeiffer

   Originalien Pages: 518 - 523

3. Effects of diagnostic procedures during fiberoptic bronchoscopy on heart rate, blood pressure, and blood gases

   • H. -W. M. Breuer
   • St. Charchut
   • H. Worth

   Originalien Pages: 524 - 529

4. Acute hypothyroidism has no effect on pulmonary vascular resistance

   • S. Wieshammer
   • F. S. Keck
   • E. F. Pfeiffer

   Originalien Pages: 530 - 534

5. Induction of anticentromere antibody in patients receiving treatment with D-penicillamine

   • G. Haberhauer

   Originalien Pages: 535 - 537

6. Occupancy of the iron-binding sites of human transferrin in sera obtained from different anatomical sites

   • W. Vogel
   • M. Herold
   • A. Bomford

   Originalien Pages: 538 - 542

7. Significance of latent hyperthyroidism

   • İ Vardarlı
   • İmren Vardarlı
   • K. H. Usadel

   Originalien Pages: 543 - 550

8. Platelet factor 4 and the response to plasma exchange in the treatment of thrombotic thrombocytopenic purpura

   • G. Wiedemann
   • I. Kantner
   • T. Wagner

   Kasuistik Pages: 551 - 555

9. Buchbesprechungen

   • M. Classen

   BookReview Pages: 555 - 555

10. Morphological analysis of iliac crest bone biopsies in patients with osteoporosis and treatment according to the ADFR concept with (1-38)hPTH and diphosphonate (EHDP)—Osteoporosis study I, Hannover

    • G. Delling
    • Th. Dreyer
    • R. D. Hesch

    Eilige Kurzmitteilung Pages: 556 - 556

11. Briefe an die Redaktion

    • H. Kopera
    • R. Ziegler

    Letter Pages: 557 - 558

12. Origin, metabolism and function of extracellular adenine nucleotides in the blood

    • Lüthje J

    Erratum Pages: 558 - 558