BMJ (Clinical Research Edition) e066450 The BMJ BMJ-British Medical Journal r-IIB SANT PAU. Repositorio Institucional de Producción Científica del Instituto de Investigación Biomédica Sant Pau instname
Proceedings of the National Academy of Sciences of the United States of America. 8/5/2003, Vol. 100 Issue 16, p9494-9499. 6p. 32 Color Photographs, 5 Diagrams, 9 Graphs.