Phenylalanine Hydroxylase (PAH) Genotyping in PKU Argentine Patients oleh Rosa E. Enacán, Mariana Nuñez Miñana, Luis Fernandez, Maria Gabriela Valle, Mercedes Salerno, Claudia I. Fraga, Fernando Santos-Simarro, Laura Prieto, Pablo Lapunzina, Norma Specola, Ana Elena Chiesa