
Fertile-window misclassification in period-tracking applications and associated pregnancy risk: a large observational analysis
<a href="https://news.google.com/rss/articles/CBMifEFVX3lxTE1SNk1VYUtTSGJVTnppU1FSN1VNRjZDNHFhRUpzdEdNcnpXbnczakxQOHpmZ3puUFBmV1lnTTJCM29lYTE5UFlldW45emdVX2swMEYzTlc0XzlkemxZU3VUMmwyMGtrS0Q5dEhhdGVzc0R6b1BKam5qZWFSUjc?oc=5" target="_blank">Fertile-window misclassification in period-tracking applications and associated pregnancy risk: a large observational analysis</a>&nbsp;&nbsp;<font color="#6f6f6f">medRxiv</font>