Zheng, H., Schnabel, A., Yahiaoui-Doktor, M., Meissner, W., Van Aken, H., Zahn, P., & Pogatzki-Zahn, E. (2017). Age and preoperative pain are major confounders for sex differences in postoperative pain outcome: A prospective database analysis. PLoS One.

Zheng, Hua, Alexander Schnabel, Maryam Yahiaoui-Doktor, Winfried Meissner, Hugo Van Aken, Peter Zahn, and Esther Pogatzki-Zahn. "Age and Preoperative Pain Are Major Confounders for Sex Differences in Postoperative Pain Outcome: A Prospective Database Analysis." PLoS One 2017.

Zheng, Hua, et al. "Age and Preoperative Pain Are Major Confounders for Sex Differences in Postoperative Pain Outcome: A Prospective Database Analysis." PLoS One 2017.