A Phase II, Double-Blind, Randomised, Placebo-Controlled Study to Assess the Efficacy and Safety of Selumetinib (AZD6244; ARRY-142886) (Hyd-Sulfate) in Combination with Docetaxel, Compared with Placebo in Combination with Docetaxel, in Patients receiving second line treatment for Locally Advanced or Metastatic Non Small Cell Lung Cancer (Stage IIIB - IV)
