%0 Journal Article %T Efficacy of Letrozole as First-Line Treatment of Postmenopausal Women with Hormone Receptor¨CPositive Metastatic Breast Cancer in Korea %A Do-Youn Oh %A Dong-Young Noh %A Hyeong-Gon Moon %A Jisu Oh %A Koung Jin Suh %A Kyung-Hun Lee %A Sae-Won Han %A Seock-Ah Im %A Seung Hoon Beom %A Tae-Yong Kim %A Tae-You Kim %A Wonshik Han %A Yaewon Yang %J Archive of "Cancer Research and Treatment : Official Journal of Korean Cancer Association". %D 2017 %R 10.4143/crt.2016.259 %K Letrozole %K Hormone receptor-positive %K Metastatic breast cancer %K First-line treatment %K Korea %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5398408/