1. Ajmi I, Zgaya H, Gammoudi L, Hammadi S, Martinot A, Beuscart R, Renard JM (2015) Mapping patient path in the pediatric emergency department: a workflow model driven approach. Accid Emerg Nurs 54:315–328
2. Ashour OM, Okudan Kreme GE (2016) Dynamic patient grouping and prioritization: a new approach to emergency department flow improvement. Acad Emerg Med 19(2):192–205
3. Bertakis KD, Azari R, Helms LJ, Callahan EJ, Robbins JA (2000) Gender differences in the utilization of health care services. J Fam Pract 49(2):147–152
4. Butler WR (1986) ED patient classification matrix: development and testing of a tool. J Emerg Nurs 12:279–285
5. Carvalho-Silva M, Monteiro MTT, De Sá-Scares F, Dória-Nóbrega D (2017) Assessment of forecasting models for patients arrival at emergency department. In: Operations research for health care. forthcoming