Phase III Trial of Gemcitabine Plus Carboplatin Versus Single-Agent Gemcitabine in the Treatment of Locally Advanced or Metastatic Non–Small-Cell Lung Cancer: The Swedish Lung Cancer Study GroupSederholm C, Hillerdal G, Lamberg K, et al (Univ Hosp, Linköping, Sweden; Karolinska Univ, Stockholm; Unv of Uppsala, Sweden; et al) J Clin Oncol 23:8380–8388, 2005§