Kawai K, Kawai AT, Wollan P, Yawn BP. Adverse impacts of chronic pain on health-related quality of life, work productivity, depression and anxiety in a community-based study. Fam Pract. 2017 Nov 16;34(6):656-61. doi: 10.1093/fampra/cmx034
Jimenez-Murcia S, Fernandez-Aranda F, Granero R, Choliz M, La Verde M, Aguglia E, Signorelli MS, Sa GM, Aymami N, Gomez-Pena M, del Pino-Gutierrez A, Moragas L, Fagundo AB, Sauchelli S, Fernandez-Formoso JA, Menchon JM. Video game addiction in gambling disorder: clinical, psychopathological, and personality correlates. Biomed Res Int. 2014;2014:315062. doi: 10.1155/2014/315062
Cheraghi-Sohi S, Bower P, Mead N, McDonald R, Whalley D, Roland M. Making sense of patient priorities: applying discrete choice methods in primary care using 'think aloud' technique. Fam Pract. 2007 Jun 1;24(3):276-82.