The Copenhagen Primary Care Laboratory Pregnancy (CopPreg) database
Janet Janbek, Margit Kriegbaum, Mia Klinten Grand, Ina Olmer Specht, Bent Struer Lind, Christen Lykkegaard Andersen, Berit Lilienthal Heitmann
BMJ Open May 2020, 10 (5) e034318; DOI: 10.1136/bmjopen-2019-034318