▁cases ▁were ▁wrong ly ▁conv icted ▁of ▁murder ing ▁two ▁or ▁more ▁of ▁their ▁children , ▁and ▁had ▁already ▁been ▁imprison ed ▁for ▁up ▁to ▁six ▁years . ▁ ▁One ▁case ▁was ▁that ▁of ▁S ally ▁Clark . ▁Clark ▁was ▁a ▁lawyer ▁wrong ly ▁conv icted ▁in ▁ 1 9 9 9 ▁of ▁the ▁murder ▁of ▁her ▁two ▁baby ▁sons , ▁largely ▁on ▁the ▁basis ▁of ▁M ead ow ' s ▁evidence . ▁As ▁an ▁expert ▁witness ▁for ▁the ▁pro sec ution , ▁M ead ow ▁assert ed ▁that ▁the ▁odd s ▁of ▁there ▁being ▁two ▁un exp la ined ▁infant ▁death s ▁in ▁one ▁family ▁were ▁one ▁in ▁ 7 3 ▁million . ▁That ▁figure ▁was ▁cru cial ▁in ▁sending ▁Clark ▁to ▁j ail ▁but ▁was ▁hot ly ▁disput ed ▁by ▁the ▁Royal ▁Statist ical ▁Society , ▁who ▁wrote ▁to ▁the ▁Lord ▁Chan cell or ▁to ▁comp lain . ▁ ▁It ▁was ▁subsequently ▁shown ▁that ▁once ▁other ▁factors ▁( e . g . ▁gen etic ▁or ▁environmental ) ▁were ▁taken ▁into ▁consideration , ▁the ▁true ▁odd s ▁were ▁much ▁greater , ▁i . e ., ▁there ▁was ▁a ▁significantly ▁higher ▁lik elihood ▁of ▁two ▁death s ▁happening ▁as ▁a ▁chance ▁occurrence ▁than ▁M ead ow ▁had ▁claimed ▁during ▁the ▁trial . ▁Those ▁odd s ▁in ▁fact ▁range ▁from ▁a ▁low ▁of ▁ 1 : 8 5 0 0 ▁to ▁as ▁high ▁as ▁ 1 : 2 0 0 . ▁ ▁It ▁emer ged ▁later ▁that ▁there ▁was ▁clear ▁evidence ▁of ▁a ▁St