Letter from the editors.
Freeman
Leonard M
LM
Blaufox
M Donald
MD
D000375:Aging / Q000378:metabolism* / Q000473:pathology*; D003952:Diagnostic Imaging / Q000379:methods* / Q000639:trends*; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis* / Q000378:metabolism*