Santosa, Toto Eko, and Neti Mustikawati. “Description of Nurses’ Perceptions about EWS (Early Warning System) and Its Use in The Inpatient Unit of Pekajangan Islamic Hospital Pekalongan”. Prosiding University Research Colloquium, June 2022, pp. 580-9, https://repository.urecol.org/index.php/proceeding/article/view/2110.