Nadal N, de Batlle J, Barbe F, Marsal JR, Sanchez-de-la-Torre A, Tarraubella N, Lavega M, Sanchez-de-la-Torre M. Predictors of CPAP compliance in different clinical settings: primary care versus sleep unit. Sleep Breath. 2018 Mar;22(1):157-63. doi: 10.1007/s11325-017-1549-7
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