@misc{indiciae1a006fa147d6, title = {Cervical assessment at the routine 23-week scan: standardizing techniques.}, author = {M S To and C Skentou and C Chan and A Zagaliki and K H Nicolaides}, year = {2001}, doi = {10.1046/j.1469-0705.2001.00369.x}, url = {https://pubmed.ncbi.nlm.nih.gov/11309170/}, note = {Source identifier: 11309170} }