"A double-blind randomised controlled trial of protein supplementation to enhance exercise capacity in COPD during pulmonary rehabilitation: a pilot study". Abdulelah M. Aldhahir, Yousef S. Aldabayan, Jaber S. Alqahtani, Heidi A. Ridsdale, Colette Smith, John R. Hurst and Swapna Mandal. ERJ Open Res 2021; 7: 00077-2021. Issue 4 (24th October 2022) - Unknown