de Andrés Ana López, Jiménez-García Rodrigo, Carrasco-Garrido Pilar
Preventive Medicine and Public Health Teaching and Research Unit, Health Sciences Faculty, Rey Juan Carlos University, Madrid, Spain.
Int J Gynaecol Obstet. 2012 May;117(2):182-3. doi: 10.1016/j.ijgo.2011.12.006. Epub 2012 Feb 18.