Individual participant data (IPD)-level meta-analysis of randomised controlled trials with vitamin D-fortified foods to estimate Dietary Reference Values for vitamin D

Kevin D. Cashman, Máiréad Kiely, Rikke Andersen, Ida M. Grønborg, Katja Howarth Madsen, Janna Nissen, Inge Tetens, Laura Tripkovic, S. A. Lanham‐New, Laura Toxqui, M. Pilar Vaquero, Ulrike Trautvetter, Gerhard Jahreis, Vikram V. Mistry, Bonny Specker, Jürgen Hower, Anette Knoll, Dennis Wagner, Reinhold Vieth, Inger Öhlund, Pia Karlsland Åkeson, Neil R. Brett, Hope A. Weiler, Christian Ritz