bibliographic entry 2045819 [be/2045819]
https://w3id.org/oc/corpus/be/2045819

is a

• bibliographic reference

content

• Petrova JG, Vaktskjold A. The incidence of neural tube defects in Norway and the Arkhangelskaja Oblast in Russia and the association with maternal age. Acta Obstet Gynecol Scand. 2009; 88: 667–672. doi: 10.1080/00016340902898008 PMID: 19353336

references

• https://w3id.org/oc/corpus/br/2389546