Bloem, A.; Veltkamp, M.; Spruit, M. A.; Custers, J. W.; Bakker, E. W.; Dolk, H. M.; Grutters, J. C. Validation of 4-Meter-Gait-Speed Test and 5-Repetitions-Sit-to-Stand Test in Patients With Pulmonary Fibrosis: A Clinimetric Validation Study. Sarcoidosis Vasc Diffuse Lung Dis 2018, 35 (4), 317-326. https://doi.org/10.36141/svdld.v35i4.7035.