Willis SK, Hatch EE, Wesselink AK, Rothman KJ, Wise LA. Female sleep patterns and spontaneous abortion in a North American preconception cohort. Poster presented at the 2020 Society for Reproductive Investigation’s 67th Annual Scientific Meeting (Conference cancelled); March 2020. Vancouver, Canada. [abstract] Reprod Sci. 2020 Mar; 27(1):374A.
Wardman M, Chintakayala PK, de Jong G. Values of travel time in Europe: review and meta-analysis. Transp Res Part A Policy Pract. 2016 Dec;94:93-111. doi: 10.1016/j.tra.2016.08.019