Quantifying the burden of stillbirths before 28 weeks of completed gestational age in high-income countries: a population-based study of 19 European countries., Smith, Lucy K., Hindori-Mohangoo Ashna D., Delnord Marie, Durox Mélanie, Szamotulska Katarzyna, Macfarlane Alison, Alexander Sophie, Barros Henrique, Gissler Mika, Blondel Béatrice, et al. , Lancet, 2018 11 03, Volume 392, Issue 10158, (2018)