30 units used a beneficial gestational duration of 39 weeks + 6 days so you’re able to estimate the time out of delivery to the pregnancy relationship and you will five devices put forty months + 0 weeks. One or two products had been unsure on which gestational duration was applied (Desk step one).

CRL-based pregnancy dating was stated: “pregnancy dating by CRL [is completed] only periodically (neutral fetal standing, good circumstances)” and you will “I watch for suggestions

Into the 26 products (68%), for around element of the population, pregnancy relationship habits had been changed throughout the second so you can first trimester 2008–2015. Continuarea →