- coph.2004.10.001. PMID 15661631. Huss M,
Duhan P,
Gandhi P, Chen CW,
Spannhuth C,
Kumar V (2 June 2021). "Methylphenidate dose
optimization for ADHD...
- 1601-5215.2003.00043.x. PMID 26983654. S2CID 207598237.
Dietrich DE, Bode L,
Spannhuth CW, Lau T,
Huber TJ,
Brodhun B, et al. (March 2000). "Amantadine in depressive...