- Ly D, Kang K, Choi JY, Ishihara A, Back K, Lee SG: HPLC analysis of serotonin, tryptamine, tyramine, and the hydroxycinnamic acid amides of serotonin and tyramine in food vegetables. J Med Food. 2008 Jun;11(2):385-9. doi: 10.1089/jmf.2007.514. [PubMed:18598185 ]
- Pasko P, Sulkowska-Ziaja K, Muszynska B, Zagrodzki P: Serotonin, melatonin, and certain indole derivatives profiles in rutabaga and kohlrabi seeds, sprouts, bulbs, and roots Food science & technology.
- Numata K, Kusui H, Kawakatsu H, Kizaki Z, Sawada T: Increased urinary HVA levels in neuroblastoma screens related to diet, not tumor. Pediatr Hematol Oncol. 1997 Nov-Dec;14(6):569-76. [PubMed:9383810 ]