Order 1/N^2 test of the Maldacena conjecture: Cancellation of the   one-loop Weyl anomaly
  We test the Maldacena conjecture for type IIB String Theory/ N=4 Yang-Mills by calculating the one-loop corrections in the bulk theory to the Weyl anomaly of the boundary CFT when the latter is coupled to a Ricci-flat metric. The contributions cancel within each supermultiplet, in agreement with the conjecture. 
Paul Mansfield and David Nolland