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
Rubinat E, Marsal JR, Vidal T, Cebrian C, Falguera M, Vilanova MB, Betriu A, Fernandez E, Franch J, Mauricio D. Subclinical carotid atherosclerosis in asymptomatic subjects with type 2 diabetes mellitus. J Cardiovasc Nurs. 2016 Mar;31(2):E1-7. doi: 10.1097/JCN.0000000000000236
Estrada CA, Unterborn JN, Price J, Thompson D, Gibson L. Judging the effectiveness of clinical pathways for pneumonia: the role of risk adjustment. Eff Clin Pract. 2000 Sep 1;3(5):221-8.