Adapted equation implementation based on Target-Site-PBPK-in-oncology,
by Imke H. Bartelink and collaborators; source commit:
00c6410c000bcb3b32b7fa54f2cb3a2aed87dcbd.
Original source licensed under Apache License2.0; copy in LICENSE.
Reference: van der Gaag S, Jordens T, et al.2025. DOI10.1002/psp4.70006.
Changes: independently structured Python equations and partition calculations,
analytic Jacobian, BDF/Radau integration, daily event schedule, cumulative mass
accounting, unfitted absorption alternative, sensitivity scenarios and new figures.
No endorsement by original authors is implied.
