Tam, A., Hughes, M., McNagny, K.M., Obeidat, M., Hackett, T.L., Leung, J.M., Shaipanich, T., Dorscheid, D.R., Singhera, G.K., Yang, C.W.T., Paré, P.D., Hogg, J.C., Nickle, D., Sin, D.D. Hedgehog signaling in the airway epithelium of patients with chronic obstructive pulmonary disease. View abstract.