title: Back to the future: cooperative health plans.
authors: MDSIS-Spring Insurance Group, USA.
authors: George
authors: G
authors: Gonser
mesh_terms: D006801:Humans; D015271:Insurance Pools / Q000331:legislation & jurisprudence*; D007348:Insurance, Health / Q000331:legislation & jurisprudence / Q000458:organization & administration*; D008404:Massachusetts; D012953:Societies, Dental