@misc{indiciae0fbd0ae8051d, title = {Comparison of several groups.}, author = {J S Bulman and J F Osborn}, year = {1989}, doi = {10.1038/sj.bdj.4806832}, url = {https://pubmed.ncbi.nlm.nih.gov/2713185/}, note = {Source identifier: 2713185} }