Cheol Lee J, Hung JY, Kim YC, Chang GC, Soo Yoo S, Yang SH, Davis KL, Nagar SP, Taylor A, Yong Lee S, Shih JY. Real-world treatment patterns in patients with EGFR mutation-positive NSCLC receiving a first line, first- or second-generation EGFR tyrosine kinase inhibitor in South Korea and Taiwan. Asian Pac J Cancer Bio. 2021 May 20;6(2). doi: 10.31557/APJCB.2021.6.2.123-132
Groenwold R, Uddin M, Roes K, de Boer A, Rivero-Ferrer E, Martin E, Gatto N, Klungel O. Instrumental variable analysis in randomized trials with non-compliance and observational pharmacoepidemiologic studies. OA Epidemiology. 2014 May 9;2(1):9.