@misc{indiciae987fcc03f281, title = {Systems coherence: a method for evolving relationships and measuring system change.}, author = {R J Seigfried}, year = {1998}, doi = {10.1097/00019514-199807010-00004}, url = {https://pubmed.ncbi.nlm.nih.gov/10344980/}, note = {Source identifier: 10344980} }