The authors have made an error in reporting the Doppler settings used in their study. On Page 584, ‘Patients and Methods’ section, ‘Ultrasound data acquisition’ sub-section, lines 25–29, the text should read:
The following settings were used: pulse repetition frequency, 0.6 kHz; wall motion filter, mid 1; quality, high; frequency, mid; color gain, 4.4; flow resolution, high; smooth, 5/5; ensemble, 23; line density, 8; power Doppler map, 5; balance, G > 180; artifact, on; line filter, 2.
Published online in Wiley InterScience (www.interscience.wiley.com). DOI: 10.1002/uog.7447