LONDON (Thomson Financial) – China Medical Systems Holdings Ltd. said it has extended its exclusive agency agreement with H. Lundbeck A/S to sell antidepressant Deanxit in China from 2009 to the end of 2013. The pharmaceutical company also said it expects the resultant sales from the purchase of minimum quantities of Deanxit from Lundbeck in order to continue its agreement with Lundbeck to amount to $36 million in 2009 and $39 million in 2010.