García-Claver, A. Ramos-Corral, R. Laviña-Fañanás, C. Solans-Blecua, I. Puzo-Foncillas, J. Capillary glucose concentration during oral glucose tolerance test for the diagnosis of gestational diabetes Int. j. gynaecol. obstet. 10.1002/ijgo.13178 2020 2020