BMC Medicine, 19(1) BMC medicine, 19(1):69. BioMed Central BMC Med Goulding, N J, Bos, M, Lee, M, Richmond, R, Wade, K H, van Heemst, D, Noordam, R & Lawlor, D A 2021, ' Investigating the relationships between unfavourable habitual sleep and metabolomic traits: evidence from multi-cohort multivariable regression and Mendelian randomization analyses ', BMC Medicine, vol. 19, no. 1, 69 . https://doi.org/10.1186/s12916-021-01939-0 BMC Medicine 19 (2021) 1 BMC Medicine, 19(1):69. BMC BMC Medicine, 19(1). BMC Bos, M M, Goulding, N J, Lee, M A, Hofman, A, Bot, M, Pool, R, Vijfhuizen, L S, Zhang, X, Li, C, Mustafa, R, Neville, M J, Li-Gao, R, Trompet, S, Beekman, M, Biermasz, N R, Boomsma, D I, de Boer, I, Christodoulides, C, Dehghan, A, van Dijk, K W, Ford, I, Ghanbari, M, Heijmans, B T, Ikram, M A, Jukema, J W, Mook-Kanamori, D O, Karpe, F, Luik, A I, Lumey, L H, van den Maagdenberg, A M J M, Mooijaart, S P, de Mutsert, R, Penninx, B W J H, Rensen, P C N, Richmond, R C, Rosendaal, F R, Sattar, N, Schoevers, R A, Slagboom, P E, Terwindt, G M, Thesing, C S, Wade, K H, Wijsman, C A, Willemsen, G, Zwinderman, A H, van Heemst, D, Noordam, R & Lawlor, D A 2021, ' Investigating the relationships between unfavourable habitual sleep and metabolomic traits : evidence from multi-cohort multivariable regression and Mendelian randomization analyses ', BMC Medicine, vol. 19, no. 1, 69 . https://doi.org/10.1186/s12916-021-01939-0 BMC Medicine, 19(1):69. BioMed Central BMC Medicine BMC Medicine, 19(1):69. BioMed Central Ltd. Bos, M M, Goulding, N J, Lee, M A, Hofman, A, Bot, M, Pool, R, Vijfhuizen, L S, Zhang, X, Li, C, Mustafa, R, Neville, M J, Li-Gao, R, Trompet, S, Beekman, M, Biermasz, N R, Boomsma, D I, de Boer, I, Christodoulides, C, Dehghan, A, van Dijk, K W, Ford, I, Ghanbari, M, Heijmans, B T, Ikram, M A, Jukema, J W, Mook-Kanamori, D O, Karpe, F, Luik, A I, Lumey, L H, van den Maagdenberg, A M J M, Mooijaart, S P, de Mutsert, R, Penninx, B W J H, Rensen, P C N, Richmond, R C, Rosendaal, F R, Sattar, N, Schoevers, R A, Slagboom, P E, Terwindt, G M, Thesing, C S, Wade, K H, Wijsman, C A, Willemsen, G, Zwinderman, A H, van Heemst, D, Noordam, R & Lawlor, D A 2021, ' Investigating the relationships between unfavourable habitual sleep and metabolomic traits : evidence from multi-cohort multivariable regression and Mendelian randomization analyses ', BMC Medicine, vol. 19, no. 1, 69, pp. 1-20 . https://doi.org/10.1186/s12916-021-01939-0 BMC Medicine, Vol 19, Iss 1, Pp 1-20 (2021) BMC Medicine, 19(1):69, 1-20. BioMed Central