Copley-Merriman C, Stevinson K, Liu FX, Wang J, Mauskopf J, Zimovetz EA, Chmielowski B. Direct costs associated with adverse events of systemic therapies for advanced melanoma: Systematic literature review. Medicine. 2018 Aug;97(31):e11736. doi: 10.1097/MD.0000000000011736
Hartman M, Bolton E, Fehnel SE. Accounting for age differences on the Wisconsin Card Sorting Test: decreased working memory, not inflexibility. Psychol Aging. 2001 Sep 1;16(3):385-99.