Authors' response: What determines which 6MWT is conventional?

Affiliations

• ¹ Department of Epidemiology, CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, The Netherlands The Research Centre for Autonomy and Participation for Persons with a Chronic Illness, Zuyd University, Heerlen, The Netherlands.
• ² Department of Epidemiology, CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, The Netherlands.
• ³ Department of Rehabilitation Sciences, KU Leuven, Leuven, Belgium Department of Respiratory Rehabilitation and Respiratory Division, University Hospital Leuven, Leuven, Belgium.
• ⁴ Department of Family Medicine, CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, The Netherlands.