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Lissoni P, Bastone A, Sala R, Mauri R, Rovelli F, Viviani S, Bajetta E, Esposti D, Esposti G, di Bella L, et al.
The oncological patients showed significantly higher mean melatonin serum levels than the control subjects. Mean melatonin values were lower in patients with solid tumours who had metastases, than in cases without metastases. GH and PRL serum levels were similar to control subjects.