RT Journal Article SR Electronic T1 Focused Cardiac Ultrasound: Limitations and Source of Interpretation Errors JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 108 OP 109 DO 10.1097/AAP.0000000000000710 VO 43 IS 1 A1 Saranteas, Theodosios A1 Panou, Fotios YR 2018 UL http://rapm.bmj.com/content/43/1/108.abstract AB