article 2016 Aerobic Exercise Training in Post-Polio Syndrome: Process Evaluation of a Randomized Controlled Trial Eric L. Voorn, Fieke S. Koopman, Merel A. Brehm, Anita Beelen, Arnold de Haan, Karin H. L. Gerrits, Frans Nollet JournalPLOS ONEDOI10.1371/journal.pone.0159280Publication typeResearch ArticleStudy typeRandomized Controlled TrialPopulationIndividuals with post-polio syndrome View on DOI ↗