@misc{indiciae7ef3584ebd3c, title = {[Testing materials for clinical use].}, author = {D Behrend and D Falkenhagen and K P Schmitz and M Böttcher and H Klinkmann}, year = {1990}, url = {https://pubmed.ncbi.nlm.nih.gov/2078753/}, note = {Source identifier: 2078753} }