Hill NL, Bratlee-Whitaker E, Sillner A, Brautigam L, Mogle J. Help-seeking for cognitive problems in older adults without dementia: a systematic review. Int J Nurs Stud Adv. 2021 Nov;3. doi: 10.1016/j.ijnsa.2021.100050
Gracia Baena JM, Calaf Vall I, Zielonka M, Marsal Mora JR, Godoy P, Worner Diz F. Risk factors and comorbidities associated with severe aortic stenosis: a case-control study. Rev Clin Esp. 2021 May 23;221(5):249-57. doi: 10.1016/j.rce.2020.01.010.