Also

* Biogen Idec Inc. and Elan Corp.’s multiple sclerosis drug Tysabri, which had been withdrawn from the U.S. market last year but now is allowed restricted use, won approval by European regulators for patients with the severest cases of the disease.

* Gannett Co. said President and Chief Executive Craig A. Dubow would succeed outgoing 35-year company veteran Douglas H. McCorkindale in the added post of chairman. Gannett, owner of USA Today and 89 local daily newspapers, said McCorkindale, 67, was retiring as of today.