HEDBERG NYQVIST KERSTIN 553,660 Development of breastfeeding behavior in preterm infants : behavioral and neurophysiological evidence of early competence / by Kerstin Hedberg Nyqvist ; [Uppsala University]. - Uppsala : Acta Universitatis Upsaliensis, 1999. - 57 s. ; 24 cm. - (Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 0282-7476 ; 840) Doctoral dissertât h. - Bibliogr. s. 48-55 ISBN 91-554-4460-1