Protocol of the digital long COVID study: A single-center, registry-based, feasibility and clinical evaluation study to investigate a 12-week digital intervention program for people affected by post-COVID-19 condition - Stefan Rohner; Rebekka Schnepper; Andrea Meienberg; Katrin Bopp; Michael Mayr; Gunther Meinlschmidt; Rainer Schaefert (PLoS ONE, 2026)