Table 1
Primers used for amplification and sequencing of EGFR genes

Amplified fragment	Primer sequence
Exon 18	F*: 5'-TCCAAATGAGCTGGCAAGTG
	R†: 5'-TCCCAAACACTCAGTGAAACAAA
Exon 19	F: 5'-ATGTGGCACCATCTCACAATTGCC
	R: 5'-CCACACAGCAAAGCAGAAACTCAC
Exon 20	F: 5'-CATTCATGCGTCTTCACCTG
	R: 5'-CATATCCCCATGGCAAACTC
Exon 21	F: 5'-GCTCAGAGCCTGGCATGAA
	R: 5'-CATCCTCCCCTGCATGTGT

F, forward; ^†R, reverse.