Mapping the growth of the CORE system tools in psychotherapy research from 1998 to 2021: Learning from historical evidence. - Paz, Clara; Unda-López, Alejandro; Valdiviezo-Oña, Jorge; Fernando Chávez, Juan; Elias Herrera Criollo, Jonathan; Toscano-Molina, Lizbeth; Evans, Chris (Psychotherapy Research, 2026)