Correction to: Journal of Medical Ultrasonics https://doi.org/10.1007/s10396-019-00942-6

In the original publication of the article, the Conflict of interest statement, name of institution and ID number of the ethical committee were published incorrectly. The correct details are given in this Correction.


The conflict of interest statement should read as “All declare that they there is no conflict of interest”.


Under the section, “Materials and methods’ first paragraph, the sentence that reads as “This study…… all participants” should read as “This study was approved by the Ethics Committee of Faculty of Medicine, Toho University (ID number A18013_A16047), and written informed consent was obtained from all participants”.