title: A change of heart.
authors.forename: Jeanne
authors.initials: J
authors.lastname: Mettner
mesh_terms: D002309:Cardiology / Q000639:trends*; D004059:Diffusion of Innovation; D005544:Forecasting; D006801:Humans; D013677:Medical Laboratory Science / Q000639:trends*; D008910:Minnesota; D013038:Specialization / Q000639:trends