- The potential predictive value of cyclooxygenase-2 expression and increased risk of gastrointestinal hemorrhage in advanced non-small cell lung cancer patients treated with erlotinib and celecoxib. Fidler, M.J., Argiris, A., Patel, J.D., Johnson, D.H., Sandler, A., Villaflor, V.M., Coon, J., Buckingham, L., Kaiser, K., Basu, S., Bonomi, P. Clin. Cancer Res. (2008)