Best practice recommendations for body composition considerations in sport to reduce health and performance risks: a critical review, original survey and expert opinion by a subgroup of the IOC consensus on Relative Energy Deficiency in Sport (REDs) - Fostervold Mathisen, T.; Ackland, T.; Burke, L. M.; Constantini, N.; Haudum, J.; Macnaughton, L. S.; Meyer, N. L.; Mountjoy, M.; Slater, G.; Sundgot-Borgen, J. (British Journal of Sports Medicine, 2023)