Jin-Chung Shih, Ming-Kwang Shyu, Chien-Nan Lee, Wen-Chung Wang, Chien-Chy Huang, Hei-Jen Jou, His-Yao Chen, Fon-Jou Hsieh. 

 Application of Sonohysterography in the Diagnosis and Management of Abnormal Intrauterine Vascular Lesions and Persistent Elevation of Serum β- Hcg