@misc{indiciae1d99a47a84e7, title = {[Trace elements in infectious gallstone diseases].}, author = {K Winnefeld and E Markgraf and H Schröder and H J Tiedt and W Wagner and M Bartel and W Sellentin}, year = {1974}, url = {https://pubmed.ncbi.nlm.nih.gov/4411305/}, note = {Source identifier: 4411305} }