Correction: Ultrasound J (2021) 13:20 https://doi.org/10.1186/s13089-021-00221-x


After publication of this article [1], the authors reported that in this article the affiliation details of affiliations 1, 3 and 5 were incorrectly given as 'King Abdulaziz International Medical Research Center' but should have been 'King Abdullah International Medical Research Center'.

The original article [1] has been corrected.