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APA Citation
Behtash, N., Ghaemmaghami, F., Honar, H., Riazi, K., Nori, A., Modares, M., & Mousavi, A. (2004). is normal β-hCG regression curve helpful in the diagnosis of persistent trophoblastic disease?. International journal of gynecological cancer, 14(5), 980–983. http://access.bl.uk/ark:/81055/vdc_100135550860.0x000021