Pengaruh Model Intervensi Keperawatan Berfokus Nutrisi terhadap Keterampilan Minum Oral, Grafik Pertumbuhan Bayi Prematur, Dyadic Interaction, dan Pengetahuan Ibu = The Effect of the Nutrition-Focused Nursing Intervention Model on Oral Feeding Skills, Growth Charts of Premature Infants, Dyadic Interaction, and Maternal Knowledge