What is the fine-grained topic of the following text: Well the day after I presented this webinar, I received a completely coincidental email from a soon-to-be-father who happens to be a scientist, telling me that his wife, now in her third trimester, had just received a urinary iodine (not ordered by the obs but requested specifically by him) result of 14 mcg/L suggestive of gross deficiency. Only return the topic.
Urinary iodine deficiency in pregnant women.