Parikh R, Hess LM, Esterberg E, Bhandari NR, Kaye JA. Diagnostic characteristics, treatment patterns, and clinical outcomes for US patients with advanced/metastatic medullary thyroid cancer: a retrospective medical record review. J Thyroid Res. 2022;15(2). doi: 10.1186/s13044-021-00119-9
Raghunathan K, Layton JB, Ohnuma T, Shaw AD. Observational research using propensity scores. Adv Chronic Kidney Dis. 2016 Nov;23(6):367-72. doi: 10.1053/j.ackd.2016.11.010