An effort to reproduce the Geerts 2022 PBPK/QSP model with SBML and python. References:  Geerts H, Walker M, Rose R, et al. A combined physiologically-based pharmacokinetic and quantitative systems pharmacology model for modeling amyloid aggregation in Alzheimer's disease. CPT Pharmacometrics Syst Pharmacol. 2023; 12: 444-461. doi:10.1002/psp4.1291