Scientific research papers：
1、MEI Xin, GUO Xiao-mao, ZHANG Zhen, CHEN Jia-yi. Outcome of Postmastectomy Radiation of Supraclavicular and Internal Mammary Regions for Breast Cancer Patients at Stage II/III. Chinese Medical Journal. 2009;122(1):103-105（Correspondence）
2、Ma X, Guo Y, Pang Z, Wang B, Lu H, Gu YJ, Guo X.A randomized phase II study of CEOP with or without semustine as induction chemotherapy in patients with stage IE/IIE extranodal NK/T-cell lymphoma, nasal type in the upper aerodigestive tract. Radiother Oncol. 2009 Dec;93(3):492-7. doi: 10.1016/j.radonc.2009.08.045. Epub 2009 Sep 24. （Correspondence）
3、Yang Z, Chen J, Hu W, Pan Z, Cai G, Yu X, Mei X, Zhang Q, Liu T, Guo X.
Planning the breast boost: how accurately do surgical clips represent the CT seroma? Radiother Oncol. 2010 Dec;97(3):530-4. doi: 10.1016/j.radonc.2010.09.007. Epub 2010 Oct 9. （Correspondence）
4、Zhang Q, Chen JY, Hu WG, Guo XM.Modified partially wide tangents technique in post-mastectomy radiotherapy for patients with left-sided breast cancer. Chin Med J (Engl). 2010 Oct;123(20):2825-31. （Correspondence）
5、Zhao R, Li Y, Yu X, Yang W, Guo X. Duodenal metastasis from recurrent invasive lobular carcinoma of breast: a case report and literature review. International Journal of Clinical Oncology, 2012, 17(2),160-164. （Correspondence）
6、Yu XL, Zhang Q, Chen JY, Zhang Z, Wang JZ, Hu WG, Pan ZQ, Hu SL, Zhang YJ, Feng Y, Shao ZM, Orecchia R, Guo XM. Delineation of the cardiac substructures based on PET-CT and contrast-enhanced CT in patients with left breast cancer treated with postoperative radiotherapy. Technology in Cancer Research and Treatment, 2013;12(2):99-107. （Correspondence）
7、Yang Z, Chen J, Xie J, Zhu C, Pan Z, Yu X, Mei X, Fu X, Guo X. Simultaneous integrated boost in breast conserving radiotherapy: is replanning necessary following tumor bed change? Technology in Cancer Research and Treatment, 2013;12(2):115-122. （Correspondence）
8、Chen X, Yu X, Chen J, Zhang Z, Tuan J, Shao Z, Guo X, Feng Y. Analysis in early stage triple-negative breast cancer treated with mastectomy without adjuvant radiotherapy: Patterns of failure and prognostic factors. Cancer. 2013;119(13):2366-2374. （Correspondence）
9、Chen X, Yu X, Chen J, Yang Z, Shao Z, Zhang Z, Guo X, Feng Y. Radiotherapy can improve the disease-free survival rate in triple-negative breast cancer patients with T1-T2 disease and one to three positive lymph nodes after mastectomy. Oncologist. 2013;18(2):141-147. （Correspondence）
