A new parsimonious model for ordinal longitudinal data with application to subjective evaluations of a gastrointestinal disease Moreno Ursino, Mauro Gasparini (2018) A new parsimonious model for ordinal longitudinal data with application to subjective evaluations of a gastrointestinal disease, In: STATISTICAL METHODS IN MEDICAL RESEARCH, pp. 1376-1393, ISSN: 0962-2802