Stats. Biomedical engineering offers more than in-house maintenance.
D001698:Biomedical Engineering / Q000191:economics* / Q000706:statistics & numerical data; D003625:Data Collection; D017721:Hospital Costs / Q000706:statistics & numerical data; D008284:Maintenance and Engineering, Hospital / Q000191:economics* / Q000706:statistics & numerical data; D014481:United States