Impact of reduced group size on patient adherence and functional outcomes in cardiac rehabilitation: insights from a COVID-19 pandemic natural experiment - Chait, Rachael M.; Ossi, Julia; Colbert, Brett M.; Huang, Eric; Gilchrist, Juliann; Garcia, Thais; Andrade-Bucknor, Sharon; Seixas, Azizi (Frontiers in Rehabilitation Sciences, 2024)