LC-MS/MS-Based Determination of Ambroxol in Human Plasma and Cerebrospinal Fluid: Validation and Applicability in a Phase II Study on GBA-Associated Parkinson's Disease Patients. - Franco, Valentina; Palmisani, Michela; Colucci, Fabiana; De Micco, Rosa; Aloisio, Simone; Cazzaniga, Federico; Cerri, Silvia; Crema, Francesca; Dattrino, Francesca; Garavaglia, Barbara; Gastaldi, Matteo; Mitrotti, Pierfrancesco; et al. (International Journal of Molecular Sciences, 2025)