Simultaneous diagnostic method for phenylketonuria and galactosemia from dried blood spots using high-performance liquid chromatography-pulsed amperometric detection - Kim, Nam-Hee; Jeong, Ji-Seon; Kwon, Ha-Jeong; Lee, Yong-Moon; Yoon, Hye-Ran; Lee, Kyoung Ryul; Hong, Seon-Pyo (Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences, 2010)