Li, Ying, Saul, Alice, Eichau, Sara, Onofrj, Marco, Ozakbas, Serkan, Horakova, Dana, Havrdova, Eva Kubala, Grand'Maison, Francois, Alroughani, Raed, Gerlach, Oliver, Amato, Maria Pia, Altintas, Ayse, Taylor, Bruce, Girard, M, Duquette, P, Blanco, Y, Ramo-Tello, C, Laureys, G, Kalincik, T, Khoury, SJ, Shaygannejad, V, Etemadifar, M, Singhal, B, Ponsonby, Anne-Louise, Mrabet, S, Foschi, M, Habek, M, John, N, Hughes, S, McCombe, P, Ampapa, R, van der Walt, A, Butzkueven, H, de Gans, K, Simpson-Yap, Steve, McGuigan, C, Oreja-Guevara, C, Sa, MJ, Petersen, T, Al-Harbi, T, Sempere, AP, Van Wijmeersch, B, Grigoriadis, N, Prevost, J, Gray, O, Blizzard, Leigh, Castillo-Trivino, T, Macdonell, R, Lugaresi, A, Sajedi, SA, van der Mei, I, Broadley, Simon, Lechner-Scott, Jeannette, Karabudak, Rana, Patti, Francesco. Springer; 2024. Examining the environmental risk factors of progressive-onset and relapsing-onset multiple sclerosis: recruitment challenges, potential bias, and statistical strategies.