Ruiz-Burga, E. Tariq, S. Touloumi, G. Gill, J. Nicholls, E.J. Sabin, C. Mussini, C. Meyer, L. Volny Anne, A. Carlander, C. Grabar, S. Jarrin, I. Van Der Valk, M. Wittkop, L. Spire, B. Pantazis, N. Burns, F.M. Porter, K., CASCADE protocol: exploring current viral and host characteristics, measuring clinical and patient-reported outcomes, and understanding the lived experiences and needs of individuals with recently acquired HIV infection through a multicentre mixed-methods observational study in Europe and Canada, BMJ Open Gastroenterology, (13), 2023, BMJ Publishing Group,