Syamsu, A.F. et al. 2023. The Effect of Seven Developmental Care Models on Mothers’ Stress and Premature Infants’ Length of Hospitalization . Poltekita : Jurnal Ilmu Kesehatan. 17, 1 (May 2023), 165–175. DOI:https://doi.org/10.33860/jik.v17i1.2183.