The authors declare no conflicts of interest. The data underlying this article cannot be shared publicly due to patient privacy concerns. De-identified data are available from the corresponding author upon reasonable request. Figure S1: Transabdominal ultrasound images obtained in Case 1 (A) and Case 2 (B), for which the maximum vertical pockets were 10.0 and 9.3 cm, respectively, indicating polyhydramnios in both patients. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Ito et al. (Thu,) studied this question.