1. 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 ]
  2. eBASIS [Link]