title: Retraction: notice.
abstract: Ping Gao, Shun-Chang Jiao, Li Bai, et al. 'Detection of circulating tumour cells in gastric and hepatocellular carcinoma: A systematic review' Journal of International Medical Research August 2013 vol. 41 no. 4 923-933. DOI: 10.1177/0300060513489789 has been retracted. This is because it contains unattributed overlap with material from the following article: FC Bidard, FR Ferrand, F Huguet, et al. 'Disseminated and circulating tumor cells in gastrointestinal oncology' Critical Reviews in Oncology / Hematology, Volume 82, Issue 2, Pages 103-115, May 2012. DOI: 10.1016/j.critrevonc.2011.05.008 NOTICE: Yongsheng Zhao, Yuxin Liu and Yanping Zheng, 'Osteoporosis and related factors in older females with skeletal pain or numbness: A retrospective study in East China', Journal of International Medical Research June 2013 vol. 41 no. 3 859-866. DOI: 10.1177/0300060513483414 has been retracted. This is because it contains unattributed overlap with material from the following article: Shasha Li, Hongchen He, Mingfu Ding et al. 'The correlation of osteoporosis to clinical features: a study of 4382 Female Cases of a Hospital Cohort with musculoskeletal symptoms in Southwest China' BMC Musculoskeletal Disorders 2010, 11:183. DOI: 10.1186/1471-2474-11-183 NOTICE: Ao Qiang Guo, Lei Sheng, Xu Lei et al. 'Pharmacological and physical prevention and treatment of no-reflow after primary percutaneous coronary intervention in ST-segment elevation myocardial infarction' Journal of International Medical Research June 2013 vol. 41 no. 3 537-547. DOI: 10.1177/0300060513479859 has been retracted. This is because it contains unattributed overlap with material from the following article: Giampaolo Niccoli, Rajesh K Kharbanda, Filippo Crea, et al. 'No-reflow: again prevention is better than treatment' European Heart Journal (2010) 31(20): 2449-2455. DOI: 10.1093/eurheartj/ehq299.