Erratum to "Effects of pulmonary rehabilitation on exercise capacity and disease impact in patients with chronic obstructive pulmonary disease and obesity" [Physiotherapy 104 (June (2)) (2018) 248–250]. Issue 4 (December 2018) - Broderick, J.; Mc Grath, C.; Cullen, K.; Talbot, D.; Gilmor, J.; Baily-Scanlan, M.; O'Dwyer, T.