Chomistek AK, Hoffman V, Urman R, Gill KS, Ezzy SM, Zhou L, Park AS, Loop B, Lopez-Leon S, McAllister P, Wang FT. Inpatient constipation among migraine patients prescribed anti-calcitonin gene-related peptide monoclonal antibodies and standard of care antiepileptic drugs: a retrospective cohort study in a united states electronic health record database. Pain Ther. 2022 Dec;11(4):1415-37. doi: 10.1007/s40122-022-00440-7
Warttig SL, Forshaw MJ, South J, White AK. New, normative, English-sample data for the Short Form Perceived Stress Scale (PSS-4). J Health Psychol. 2013 Dec;18(12):1617-28. doi: 10.1177/1359105313508346