Building a Brief Multidomain Questionnaire for Gambling Dual Disorder: Psychometric Validation and RDoC‐Based Dimensional Structure. - Basurte‐Villamor, Ignacio; Gomez‐Talal, Ismael; Vega, Pablo; Azizsoltani, Mana; Gonzalez‐Peñas, Javier; Ferre, Francisco; Szerman, Nestor (International Journal of Methods in Psychiatric Research, 2026)