Association between the persistent organic pollutants and polycystic ovary syndrome: A protocol for a systematic review and meta-analysis.

Background: Current evidence concerning the association between persistent organic pollutants (POPs) and polycystic ovary syndrome (PCOS) is inconsistent. The aim of the present systematic review and meta-analysis is to evaluate the role of POPs in PCOS.

Methods: Databases including PubMed, Embase, Web of Science, and CNKI will be searched to identify qualified studies.

[Cost-effectiveness of schistosomiasis comprehensive control in Lushan County from 2007 to 2012].

Objective: To evaluate the cost-effectiveness of comprehensive control strategy which mainly controls the schistosomiasis infection source in Lushan County from 2007 to 2012.

Methods: The data of the schistosomiasis endemic, Oncomelania hupensis snail status, control technology, and funding were collected and analyzed statistically in the endemic villages of Lushan County from 2007 to 2012.

Results: The schistosome infection rate of the residents decreased from 0.