Burton AE, Dean SE, Demeyin (Nuabor) W, Reeves J. Questionnaire measures of self-directed ageing stereotype in older adults: a systematic review of measurement properties. Eur J Ageing. 2020 Jul 12. doi: 10.1007/s10433-020-00574-7
Hayes AF, Montoya AK, Rockwood NJ. The analysis of mechanisms and their contingencies: PROCESS versus structural equation modeling. AMJ. 2017 Feb;25(1):76-81. doi: 10.1016/j.ausmj.2017.02.001
Mangel AW, Wang J, Sherrill B, Gnanasakthy A, Ervin C, Fehnel SE. Urgency as an endpoint in irritable bowel syndrome. Gastroenterology Research. 2011 Feb 1;4(1):9-12.