@misc{indiciae7254d68cd38d, title = {THE SUBTRACTION METHOD.}, author = {R HORENSTEIN and A LUNDH and S E SJOEGREN}, year = {1964}, doi = {10.1177/028418516400200312}, url = {https://pubmed.ncbi.nlm.nih.gov/14174196/}, note = {Source identifier: 14174196} }