Adolfsson, Lars, Per Lundin, and Hanna Björnsson Hallgren. 2022. “The Adolfsson-Björnsson Activity Scale (ABAS) Improves Description of Patient Characteristics”. Archives of Clinical and Biomedical Research 6 (2):408-17. https://fortunejournals.org/ojs/index.php/acbr/article/view/14923.