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
Climent M, Hidalgo N, Vidal O, Puig S, Iglesias M, Cuatrecasas M, Ramon JM, Garcia-Albeniz X, Grande L, Pera M. Postoperative complications do not impact on recurrence and survival after curative resection of gastric cancer. Eur J Surg Oncol. 2016 Jan;42(1):132-9. doi: 10.1016/j.ejso.2015.08.163
Warttig SL, Forshaw MJ, South J, White AK. New, normative, English-sample data for the Short Form Perceived Stress Scale (PSS-4). J Health Psychol. 2013 Dec;18(12):1617-28. doi: 10.1177/1359105313508346