SAN FRANCISCO--(BUSINESS WIRE)--McKesson Corporation (NYSE: MCK) today reported that revenues for the fourth quarter ended March 31, 2012 were $31.7 billion, up 10% compared to $28.9 billion a year ago. On the basis of U.S. generally accepted accounting principles (“GAAP”), fourth-quarter earnings per diluted share was $2.09 compared to $1.62 a year ago.
