Nature Publishing Group journals Online access to Nature Publishing Group journals https://secure.nature.com/images/naturegroup_logo2png.PNG https://secure.nature.com/images/naturegroup_logopng.PNG https://secure.nature.com/images/naturegroup_logo2.GIF https://secure.nature.com/images/naturegroup_logo.GIF MIIDVzCCAj+gAwIBAgIESsDsijANBgkqhkiG9w0BAQsFADBcMQswCQYDVQQGEwJVSzEPMA0GA1UE BxMGTG9uZG9uMRIwEAYDVQQKEwlNYWNtaWxsYW4xDDAKBgNVBAsTA05QRzEaMBgGA1UEAxMRc2Vj dXJlLm5hdHVyZS5jb20wHhcNMTUwNjIzMDgxODQ3WhcNMjUwNjIwMDgxODQ3WjBcMQswCQYDVQQG EwJVSzEPMA0GA1UEBxMGTG9uZG9uMRIwEAYDVQQKEwlNYWNtaWxsYW4xDDAKBgNVBAsTA05QRzEa MBgGA1UEAxMRc2VjdXJlLm5hdHVyZS5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB AQC0tKViXqJ6zxZ0W6kBxCk/6Jd8dqcfeODSonisCrGqAOO6uP2G81LICj/WQCSGu7J8gY2o1ZbV KWxyXWzYUgs8ZR0zoPUVOCpo8JPjXqZFlo2mCy5Ex9H7VrUu2KqM0eGZ8c80r7rUj0a7Yp8HvZex kt1HMcnvUYPER8XGGFqRaut7Ny/D1HlSZdQhkXVmHhySEkaObGDLR9ZG0EJFqjuRwk7RZu9fDuFw uo2+GVOQsR0A/dUzo49F/RDyRmjGpSpajirCm5paLCfb2K2mNSboNQ8VQqH5nYpxL9xuwAyt5ect vKlsun+gRJiRmw3Nbm4D+jrVMzz/OLqCVIWVK6PRAgMBAAGjITAfMB0GA1UdDgQWBBRAYRF+J0Fz kBZcXfNNK2IXcL66ijANBgkqhkiG9w0BAQsFAAOCAQEAlQszJFL/eicmXBGXIBtz0xWpLRc4hjvt LAD16bPmMqOXk8RYlFy3BFC9ZLs/imkOK4ixfgMNfCyddbT+//ABNTuM4a6qeL/5oNNPJZJmqInm 8QqN0fxNfSnFtyVCfX68mYBD7Onl9TcnRKKqJ4dm6C4qXQqVAUbC7gYTTljCHXoqbLjwnY5pPFqF 3CuGxi7rhyP39Dax4UKiQm3V9AZkcxq8fDs+GsTLUceGOYa0g4LoDsUMcPo26IP8N4gcz7VHslwv mxxchptFQSwuunaMQuJhSrR18v8AFekwNd6YEDzxQSqKOo/9eLoymeztcHBVP9f+l39z/rvGsWlZ 5C+nbg== Macmillan Publishers Limited Nature Publishing Group http://www.nature.com/npg_/company_info/index.html John Ollier mailto:j.ollier@nature.com John Ollier mailto:j.ollier@nature.com