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O. Ludwiczek; A. Kaser; H. Tilg. (2003).
Plasma levels of soluble CD40 ligand are elevated in inflammatory bowel diseases. , 18(2), 142–147.
doi:10.1007/s00384-002-0425-4
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research
