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Sun, Wei-Hao, et al. "Inhibition of COX-2 and Activation of Peroxisome Proliferator-activated Receptor γ Synergistically Inhibits Proliferation and Induces Apoptosis of Human Pancreatic Carcinoma Cells." Cancer Letters 275, no. 2 (2009): 247-255. https://doi.org/10.1016/j.canlet.2008.10.023.

Sun, Wei-Hao, et al. "Inhibition of COX-2 and Activation of Peroxisome Proliferator-activated Receptor γ Synergistically Inhibits Proliferation and Induces Apoptosis of Human Pancreatic Carcinoma Cells." Cancer Letters, vol. 275, no. 2, 2009, pp. 247-255, https://doi.org/10.1016/j.canlet.2008.10.023.