Frankel, J. P., Kempster, P. A., Bovingdon, M., Webster, R., Lees, A. J., & Stern, G. M. (1989). The effects of oral protein on the absorption of intraduodenal levodopa and motor performance.

Frankel, J P., P A. Kempster, M. Bovingdon, R. Webster, A J. Lees, and G M. Stern. The Effects of Oral Protein On the Absorption of Intraduodenal Levodopa and Motor Performance. 1989.

Frankel, J P., et al. The Effects of Oral Protein On the Absorption of Intraduodenal Levodopa and Motor Performance. 1989.