Gnanasakthy A, DeMuro C, Boulton C. Integration of patient-reported outcomes in multiregional confirmatory clinical trials. Contemp Clin Trials. 2013 May 1;35(1):62-9.
Xu J, Evans J, Coon C, Copley-Merriman K, Su Y. Measuring patient-reported outcomes in advanced gastric cancer. Ecancermedicalscience. 2013;7:351. doi: 10.3332/ecancer.2013.351.