1. Diagnosis of neuroblastoma by qualitative and quantitative determination of catecholamine metabolites in urine;Gitlow;Cancer,1970
2. Mass screening test for blastoma reported;Leonard;JAMA,1972
3. Testrip-Neuroblastoma/pheochromocytoma detection kit by VMA test strips, Kallestad Laboratories, Inc., 4005 Vernon Avenue, Minneapolis, Minn. 55416.
4. Simultaneous quantitation of 4-hydroxy-3-methoxymandelic (vanilmandelic) and 4-hydroxy-3-methoxyphenylacetic (homovanillic) acids in human urine;Addanki;Clin Chem,1976
5. Addanki S, Hinnenkamp ER, and Sotos JF: Averages-of-normal values for urinary vanilmandelic (VMA) and homovanilic (HVA) acids in a Children's Hospital patient population (submitted to Clin Chem).