article 2019 Snus (Moist tobacco): Effect on maternal circulating mid-pregnancy placenta-derived angiogenic proteins in a scandinavian cohort ·doi:10.1016/j.preghy.2019.08.125
article 2005 Reduction in hospitalized women with pelvic inflammatory disease in Oslo over the past decade ·doi:10.1080/j.0001-6349.2005.00509.x