First-trimester HbA_1c in relation to plasma glucose concentrations in an oral glucose tolerance test at 12 to 16 weeks' gestation-a population-based study.

"Declarations Ethics approval and consent to participateThe study has been approved by the ethical committee of the Hospital District of Helsinki and Uusimaa (343/13/03/03/2012, with the latest amendment accepted on November 13, 2019 (HUS/1794/2016). All study participants provided written informed consent. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding The EDDIE study has been supported by the Research Foundation of South Karelia Central Hospital, Viipuri Tuberculosis Foundation, Finnish State Funding for University-level Health Research, Päivikki and Sakari Sohlberg Foundation, Diabetes Research Foundation, and Juho Vainio Foundation. Additionally, individual researchers have received grants from South Karelia Medical Association (BS-L, MJ, MMK), Viipuri Tuberculosis Foundation (BS-L, MJ, MMK), Finnish Medical Foundation (MJ and MMK), Maud Kuistila Memorial Foundation (MMK), Research Foundation for Obstetrics and Gynecology (MMK), Biomedicum Helsinki Research Foundation (MMK), Finnish Cultural Foundation (MMK), Jalmari Rauha Ahokas Foundation (MMK), and Päivikki ja Sakari Sohlberg Foundation (MMK)."