Meller J, Altenvoerde G, Munzel U, Jauho A, Behe M, Gratz S, Luig H, Becker W (2000). «Fever of unknown origin: prospective comparison of [18F]FDG imaging with a double-head coincidence camera and gallium-67 citrate SPET.». Eur J Nucl Med.27 (11): 1617-25. PMID 11105817.