Öztürk, E.; Pirbudak Cocel, L.; Uğur, M. G.; Kul, S.; Berbağcı, A.; Erdaloğlu, P.; Sarı Demir, S.; Balat, Özcan. A Quantitative Analysis of Pressure Pain Threshold and Pain Tolerance In Different Trimesters of Pregnancy and Relation With Ovarian Sex Hormones. Gynecol Obstet Reprod Med 2011, 17, 137-141.