1. Smith MEB, Chiovaro JC, O’Neil M et al (2014) Early warning system scores: a systematic review. Natl Libarary Med [Online]. Available: https://www.ncbi.nlm.nih.gov/books/NBK259029/. Last accessed 09 Aug 2022
2. Nursalam N, Ahsan A (2020) Knowledge and skill in relation to the speed and accuracy of the nurses when assessing using an early warning system (EWS). J Ners 15:531–537
3. United State Enviromental Protection Agency: Health Risks (2010)
4. Word Health Organization: THE GLOBAL HEALTH OBSERVATORY (2022) [Online]. Available: https://www.who.int/. Last accessed 09 Sept 2022
5. Harnadini S, Purnawan AW (2012) Pengaruh beban kerja, kelelahan kerja, dan tingkat kewaspadaan terhadap tingkat kesalahan dalam upaya meminimasi human error (Studi Kasus di R.S Semarang). Ind Eng Online J 1:1–4