2. Hermens RP, Ouwens MM, Vonk-Okhuijsen SY, van der Wel Y, Tjan-Heijnen VC, van den Broek LD, Ho VK, Janssen-Heijnen ML, Groen HJ, Grol RP et al.: Development of quality indicators for diagnosis and treatment of patients with non-small cell lung cancer: a first step toward ...