@misc{indiciae2edbc69c6b7e, title = {The HSA: a focus for advancing primary preventive dental programs.}, author = {J A Coombs and J B Silversin}, year = {1979}, doi = {10.1111/j.1752-7325.1979.tb01835.x}, url = {https://pubmed.ncbi.nlm.nih.gov/284130/}, note = {Source identifier: 284130} }