1. Rugina VG, Mihalcea D, Pricop F. The lymph nodes status-prognostic factor in breast cancer. Rev Med Chir Soc Med Nat Iasi. 2011;115:839–44.
2. Stankov A, Bargallo-Rocha JE, Silvio AN, Ramirez MT, Stankova-Ninova K, Meneses-Garcia A. Prognostic factors and recurrence in breast cancer: experience at the national cancer institute of Mexico. ISRN Oncol. 2012;2012:825258.
3. Georgescu R, Coros MF, Stolnicu S, Podeanu D, Sorlea S, Rosca A, et al. Prognostic factors in breast cancer. Rev Med Chir Soc Med Nat Iasi. 2012;116:262–7.
4. He M, Tang LC, Yu KD, Cao AY, Shen ZZ, Shao ZM, et al. Treatment outcomes and unfavorable prognostic factors in patients with occult breast cancer. Eur J Surg Oncol (EJSO). 2012;38:1022–8.
5. Halsted WSI. A clinical and histological study of certain adenocarcinomata of the breast: and a brief consideration of the supraclavicular operation and of the results of operations for cancer of the breast from 1889 to 1898 at the Johns Hopkins Hospital. Ann Surg. 1898;28:557–76.