Acknowledgements
MARION
We warmly thank the contributing families, the ELENA staff (Ela Miniarikova, Lee Audras-Torrent, Noémie Fourgassié, Laura Fragey, Marion Sevens, Julie Loubersac, Cécile Michelon, and Laëtitia Ferrando) and the ELENA study group. A full list of members and their affiliations appears in the Supplementary Information. We also express gratitude to the 