This is a digital version of the Kansas City Cardiomyopathy Questionnaire shortened 12 step version. (KCCQ-12))
References to the original KCCQ-12
https://www.ahajournals.org/doi/10.1161/circoutcomes.6.suppl_1.A248?cookieSet=1
https://pubmed.ncbi.nlm.nih.gov/26307129/
https://cvam.com/wp-content/uploads/2019/07/KCCQ-Questionnaire.pdf