Langford Paul R, Sansone Assunta, Valenti Piera, Battistoni Andrea, Kroll J Simon
Molecular Infectious Diseases Group, Department of Paediatrics, Imperial College of Science, Technology and Medicine, St. Mary's Hospital Campus, London W2 1PG, United Kingdom.
Methods Enzymol. 2002;349:155-66. doi: 10.1016/s0076-6879(02)49331-7.