Maternal vitamin D levels correlate with fetal weight and bone metabolism during pregnancy: a materno-neonatal analysis of bone metabolism parameters.

Objectives: Vitamin D plays an essential role in neonatal skeletal development and maternal weight gain during pregnancy. We aim to study the association between vitamin D status, maternal weight, and materno-neonatal bone metabolism parameters.

Methods: From January to June 2017, we conducted this cross-sectional study among 103 pregnant women (21-42 years old) and their singletons.

[Comparison of ultrasound plus radiography versus computed tomography in the diagnosis of ectopic intrauterine devices].

Objective: To compare the effectiveness of ultrasound plus radiography versus computed tomography (CT) in the diagnosis of ectopic intrauterine device (IUD) and analyze the ratio of cost and effectiveness (C/E) so as to provide scientific rationales for the selection of appropriate diagnostic methods.

Methods: A total of 70 cases were recruited from two major Chinese hospitals in 2009. They were examined with ultrasound plus radiography and CT respectively.

Association of JAG1 with bone mineral density and osteoporotic fractures: a genome-wide association study and follow-up replication studies.

Bone mineral density (BMD), a diagnostic parameter for osteoporosis and a clinical predictor of fracture, is a polygenic trait with high heritability. To identify genetic variants that influence BMD in different ethnic groups, we performed a genome-wide association study (GWAS) on 800 unrelated Southern Chinese women with extreme BMD and carried out follow-up replication studies in six independent study populations of European descent and Asian populations including 18,098 subjects. In the meta-analysis, rs2273061 of the Jagged1 (JAG1) gene was associated with high BMD (p = 5.

[Clinical analysis of 42 cases of primary malignant tumor in vagina].

Objective: To analyze the clinical characters, treatment and prognosis of primary malignant tumor in vagina.

Methods: A retrospective analysis of 42 patients diagnosed with primary malignant tumor in vagina in Peking Union Medical College Hospital (PUMCH) between Jan 1984 and Aug 2006 was performed.

Results: Primary malignant tumor accounted for 0.