The study included patients diagnosed with MTC in the United States from 2004 to 2015, and patients with missing data, unknown clinicopathological status, indeterminate histology, or other types of TC were excluded.
The study focused on patients diagnosed with MTC in the United States from 2004 to 2015, excluding patients with missing data, unclear clinical and pathological conditions, histological uncertainty, or other types of TC.
The subjects of this study were patients diagnosed as MTC in the United States from 2004 to 2015, excluding patients with missing data, unknown clinical and pathological conditions, uncertain histology or other types of TC.