Reduced risk of pre-eclampsia with organic vegetable consumption: results from the prospective Norwegian Mother and Child Cohort Study

Hanne Torjusen, Anne Lise Brantsæter, Margaretha Haugen, Jan Alexander, Leiv S Bakketeig, Geir Lieblein, Hein Stigum, Tormod Næs, Jackie Swartz, Gerd Holmboe-Ottesen, Gun Roos, Helle Margrete Meltzer