Rockwood NJ, Jeon M. Estimating complex measurement and growth models using the R package PLmixed. Multivar Behav Res. 2019 Mar;54(2):288-306. doi: 10.1080/00273171.2018.1516541
Gittelman M, Brown TM, Holm-Larsen T, Persson BE. Comparison of the impact of degarelix and leuprolide on the health-related quality of life of patients with prostate cancer: results of a 12-month phase III clinical trial. UroToday International Journal. 2011 Dec 1;4(6):Art. 81.