AUTHOREA
Log in
Sign Up
Browse Preprints
LOG IN
SIGN UP
Essential Maintenance
: All Authorea-powered sites will be offline 9am-10am EDT Tuesday 28 May
and 11pm-1am EDT Tuesday 28-Wednesday 29 May. We apologise for any inconvenience.
Wanyan Li
Public Documents
1
October 07, 2020
The Value of Ultrasound in Diagnosing Umbilical Cord Knot and Its Effect on Fetal Per...
Jufen Gan, Yi Zhou, Wenqian Qiu, et al.