References
Beeson MS, Carter WA, Christopher TA et al (2013) Emergency medicine milestones. J Grad Med Educ 5:5–13
American College of Emergency Physicians. Ultrasound guidelines: emergency, point of care, and clinical ultrasound guidelines in medicine. [policy statement] 2016. https://www.acep.org/globalassets/new-pdfs/policy-statements/ultrasound-policy-2016-complete_041417.pdf. Accessed 29 July 2018