Valeant Pharmaceuticals International Inc said a group of company executives will take over in an interim capacity, until CEO Michael Pearson returns from medical leave. Pearson, who joined Valeant as CEO in 2010 after a 23-year career at McKinsey & Company, will be on a medical leave of absence, effective immediately, the company said in a statement on Monday. Valeant’s board has created an “office of the Chief Executive Officer”, which will include general counsel Robert Chai-Onn, company group chairman Ari Kellen, and chief financial officer Robert Rosiello.