Another way.
Barrett
A
A
D002648:Child; D003906:Developing Countries / Q000191:economics; D006297:Health Services Accessibility / Q000191:economics; D006801:Humans; D009369:Neoplasms / Q000188:drug therapy / Q000532:radiotherapy*; D011878:Radiotherapy / Q000009:adverse effects / Q000191:economics* / Q000295:instrumentation