Also. . .

Aetna Inc. said first-quarter profit fell about 18% to $146.6 million, or 90 cents a diluted share, from a year ago, beating expectations of 84 cents, as its retirement-services and international operations helped offset higher medical costs in its health business. Revenue rose 3% to $4.63 billion.

* Eli Lilly & Co. said Randall Tobias will step down as chief executive in July and as chairman at the end of the year, five years after the 56-year-old executive moved from AT&T; Corp. to take charge of the Indianapolis-based drug maker. Sidney Taurel, 49, president and chief operating officer, will take over as CEO on July 1 and become chairman when Tobias steps down.