HMO blues.
Echols-Elliott
Sabrina
S
Department of Family and Community Medicine, Baylor College of Medicine, Houston, TX 77005-2646, USA.
D054598:Blue Cross Blue Shield Insurance Plans; D006279:Health Maintenance Organizations / Q000458:organization & administration*; D006801:Humans; D007350:Insurance, Hospitalization; D007357:Insurance, Physician Services; D013781:Texas