550,226 TUUMINEN TAMARA Development of a combined diagnostic system for neonatal screening of phenylketonuria and congenital hypothyroidism / by Tamara Tuuminen ; Department of Clinical Chemistry University of Helsinki and Labsystems Oy. - [Helsinki] «[Societas Scien-tiarum Fennica], [1993] - 106 s. s wykr. ; 25 cm (Conaentationes Physico-Mathematicae et Chemi-co-Medicae, ISSN 0788-5717 ; 148) ISBN 951-653-257-8