@misc{indiciaecc712217e40d, title = {[Problems in the so-called root canal therapy--recommendations for the practice].}, author = {E M Sobkowiak and M Held and H Rump and S Morgenroth and G Radtke and S Unterspann}, year = {1974}, url = {https://pubmed.ncbi.nlm.nih.gov/4533179/}, note = {Source identifier: 4533179} }