@ARTICLE{
author={Di Renzo GC,Mattei A,Gojnic Miroslava G,Gerli S},
year={2005},
title={Progesterone and pregnancy},
journal={CURRENT OPINION IN OBSTETRICS & GYNECOLOGY},
volume={17},
number={6},
pages={598-600},
document_type={Article},
} 

@ARTICLE{
author={Di Renzo GC,Rosati A,Mattei A,Gojnic Miroslava G,Gerli S},
year={2005},
title={The changing role of progesterone in preterm labour},
journal={BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY},
volume={112},
number={},
pages={57-60},
document_type={Article},
}