Wave W1 W2 W3 W4 W5 W6
Time of collection Up to 12 weeks gest 13 to 24 weeks gest 25 weeks to birth Birth 18 mths 6 yrs
Year 2007-2009 2007-2009 2007-2009 2007-2009 2008-2011 2014-2016
Identifiers  P:SDV  P:SDV P:SDV  P:SDV  P:SDV
Comments  P:SDVC