1. Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-9510, United States
2. Antibody Discovery and Protein Engineering Department, AstraZeneca R&D, Gaithersburg, Maryland 20878, United States
3. AstraZeneca Oncology R&D, Gaithersburg, Maryland 20878, United States
4. Spirogen, London E1 2AX, United Kingdom