Bomans, S., Michotte, N., M’Rabet, I. E., Garcia, B. J., Leemans, L., Janssens, P., Hanon, S., Waele, E. D., Beckwée, D. (2026). Agreement and reliability between the two-day 6-minute incremental step test and two-day cardiopulmonary exercise test in post COVID-19 condition for assessing post-exertional malaise: The REVEAL-study. PLoS ONE. https://doi.org/10.1371/journal.pone.0353132