Long-term safety and efficacy of levodopa-carbidopa intestinal gel in advanced Parkinson's disease. - Fernandez HH; Boyd JT; Fung VSC; Lew MF; Rodriguez RL; Slevin JT; Standaert DG; Zadikoff C; Vanagunas AD; Chatamra K; Eaton S; Facheris MF; et al. (Movement disorders : official journal of the Movement Disorder Society, 2018)