Tonia, Thomy, Guido Schwarzer, and Julia Bohlius. “Cancer, Meta-Analysis and Reporting Biases: The case of Erythropoiesis-Stimulating Agents”. Swiss Medical Weekly 143, no. 1920 (May 5, 2013): w13776. Accessed April 18, 2024. https://smw.ch/index.php/smw/article/view/1685.