Caregiver burden in cystic fibrosis: a systematic literature review.

"Conflict of interest statement: The authors declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: CD, GV-H, and KO’R are employees of Vertex Pharmaceuticals (Europe) Limited and may hold stock or stock options in the company. PR and LL are employed by PHMR, an independent research company that provides consulting and other research services to pharmaceutical, medical device, and related organizations. In their salaried positions, they work with a variety of companies and are precluded from receiving payment or honoraria directly from these organizations for services rendered. PHMR received payment from Vertex Pharmaceuticals Incorporated for the conduct of this study."

"Funding: The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was funded by Vertex Pharmaceuticals Incorporated."