Retraction: Prognostic and Predictive Value of Carcinoembryonic Antigen and Cytokeratin-19 Fragments Levels in Advanced Non-Small Cell Lung Cancer Patients Treated with Gefitinib

Yonsei Med J http://www.eymj.org Volume 54 Number 1 January 2013 269

Retraction http://dx.doi.org/10.3349/ymj.2013.54.1.269

pISSN: 0513-5796, eISSN: 1976-2437 Yonsei Med J 54(1):269-269, 2013

Retraction: Prognostic and Predictive Value of Carcinoembryonic Antigen and Cytokeratin-19 Fragments Levels in Advanced Non-Small Cell Lung Cancer Patients Treated with Gefitinib

or Erlotinib. Yonsei Med J 2012;53:931-9.

Minkyu Jung, ^1,2 Se Hyun Kim, ^1,2 Soojung Hong, ^1,2 Young Ae Kang, ³ Se Kyu Kim, ³ Joon Chang, ³ Sun Young Rha, ^1,2 Joo Hang Kim, ^1,2 Dae Joon Kim, ⁴ and Byoung Chul Cho ^1,2

1

Yonsei Cancer Center,

Division of Medical Oncology,

Division of Pulmonology, Department of Internal Medicine, and

4

Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul, Korea.

Dear Editor

We deeply regret to inform you that our paper was submitted twice to two different Journals, and was already published in another Journal

; therefore, we are requesting to retract our paper that has been published in YMJ.

We mistakenly sub- mitted our paper to the other journal. As the corresponding author, I will take full responsibility for this error and re- spectfully request for the retraction of our paper from YMJ.

1. Jung M, Kim SH, Lee YJ, Hong S, Kang YA, Kim SK, et al.

Prognostic and predictive value of CEA and CYFRA 21-1 levels in advanced non-small cell lung cancer patients treated with gefi- tinib or erlotinib. Exp Ther Med 2011;2:685-93.

2. Jung M, Kim SH, Hong S, Kang YA, Kim SK, Chang J, et al.

Prognostic and predictive value of carcinoembryonic antigen and

cytokeratin-19 fragments levels in advanced non-small cell lung

cancer patients treated with gefitinib or erlotinib. Yonsei Med J

2012;53:931-9.