2.NSF Publications
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Item Guidelines for calculating sample size in 2x2 crossover trials. a simulation study(NSF. Colombo, 2011) Siyasinghe, N.M.; Sooriyarachchi, M.R.Item Use of Schoenfeld's global test to test the proportional hazards assumption in the Cox proportional hazards model:an application to a clinical study(National Science Foundation:Colombo, 2009-3) Abeysekera, W.W.M.; Sooriyarachchi, M.R.