RT Journal Article SR Electronic T1 Sex ratio at birth among Chinese babies born in Italy is lower than in China JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 967 OP 968 DO 10.1136/jech.57.12.967 VO 57 IS 12 A1 F Festini A1 G Taccetti A1 T Repetto A1 M L Cioni A1 M de Martino YR 2003 UL http://jech.bmj.com/content/57/12/967.abstract AB