Randomized Controlled Trial
Randomised, double blind, placebo controlled crossover trial of sustained release morphine for the management of refractory dyspnoea.
BMJ. 2003 Sep 6;327(7414):523-8.
Randomized Controlled Trial
A randomized controlled trial on the benefits and respiratory adverse effects of morphine for refractory dyspnea in patients with COPD: Protocol of the MORDYC study.
Contemp Clin Trials. 2016 Mar 1; 47: 228-34.
Randomized Controlled Trial
Effects of low-dose morphine on perceived sleep quality in patients with refractory breathlessness: A hypothesis generating study.
Respirology. 2016 Feb 1; 21 (2): 386-91.