Stene, L.C., Eidem, I., Vangen, S., Joner, G., Irgens, L.M. and Moe, N. 2009. The validity of the diabetes mellitus diagnosis in the Medical Birth Registry of Norway. Norsk Epidemiologi. 17, 2 (Oct. 2009). DOI:https://doi.org/10.5324/nje.v17i2.158.