P. Layer, J. Keller, P. G. Lankisch: Pancreatic enzyme replacement therapy. In: Curr Gastroenterol Rep. 3. Jahrgang, Nr.2, April 2001, S.101–108, doi:10.1007/s11894-001-0005-8, PMID 11276376.
P. Layer, J. Keller, P. G. Lankisch: Pancreatic enzyme replacement therapy. In: Curr Gastroenterol Rep. 3. Jahrgang, Nr.2, April 2001, S.101–108, doi:10.1007/s11894-001-0005-8, PMID 11276376.