Women who are born in the summer are likely to have fewer children than women born in other months, researchers have suggested.

The team, from the University of Vienna, Austria, say the finding is true despite modern contraception use.

Writing in the journal Human Reproduction, they say the finding mirrors trends seen in populations in the past.

However, there was no link between month of birth and childlessness.

The researchers looked at more than 3,000 Austrian women aged over 45 who were on a national database.

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