Zhang, C., Guo, X., Xu, Y., Han, X., Wang, X., & Wang, G. (2019). Lung metastases at the initial diagnosis of high-grade osteosarcoma: prevalence, risk factors and prognostic factors. A large population-based cohort study. São Paulo Medical Journal, 137(5), 423–429. Retrieved from https://periodicosapm.emnuvens.com.br/spmj/article/view/923