Authors: Aya Mousa; Tone Løvvik; Ijäs Hilkka; Sven M Carlsen; Laure Morin-Papunen; Kristiina Tertti; Tapani Rönnemaa; Argyro Syngelaki; Kypros Nicolaides; Hassan Shehata; Christy Burden; Jane E Norman; Janet Rowan; Jodie M Dodd; William Hague; Eszter Vanky; Helena J Teede Journal: BMJ Open Date: 2020-05-21 Impact factor: 2.692