If you are planning to ask your OB to carry out downs screening during your pregnancy, please read the following research paper and ask your OB whether they certified to do it.
*Many OBs in HK offer this service even though they are not certified.*
Don't just assume anyone with an ultrasound is qualified to do it.
http://www.ncbi.nlm.nih.gov/m/pubmed/19966349/
*Many OBs in HK offer this service even though they are not certified.*
Don't just assume anyone with an ultrasound is qualified to do it.
http://www.ncbi.nlm.nih.gov/m/pubmed/19966349/