1. Drews, J. Nat. Biotechnol. 14, 1516–1518 (1996).
2. Booth, B. & Zemmel, R. Nat. Rev. Drug Disc. 3, 451–456 (2004).
3. Anonymous. Parexel's Pharmaceutical R&D Statistical Sourcebook 2003/2004, p. 42 (Parexel International Corporation, Waltham, MA, 2003).
4. Weston, A.D. & Hood, L. J. Proteome Res. 3, 179–196 (2004).
5. Weston, A.D., Baliga, N.S., Bonneau, R. & Hood, L. in The Genome of Homo Sapiens, Volume LXVIII, Symposia on Quantitative Biology, 345–357 (Cold Spring Harbor Press, Cold Spring Harbor, NY, 2004).