Standard values for the urine HVA/VMA ratio in neonates as a screen for Menkes disease.

Lee T, Yagi M, Kusunoki N, Nagasaka M, Koda T, Matsuo K, Yokota T, Miwa A, Shibata A, Morioka I, Kodama H, Takeshima Y, Iijima K.

Brain Dev  37(1):114-9