00645nas a2200241   4500000000100000000000100001000000100002008004100003653001700044653002200061653001800083100001600101700001700117700001400134700001600148700001600164700001700180245015800197250001500355300001200370490000700382020001400389       2022                            d10aepidemiology10amaternal medicine10apublic health1 aJ. Campbell1 aK. Bhaskaran1 aS. Thomas1 aR. Williams1 aH. McDonald1 aC. Minassian00aInvestigating the optimal handling of uncertain pregnancy episodes in the CPRD GOLD Pregnancy Register: a methodological study using UK primary care data  a2022/02/24  ae0557730 v12  a2044-6055