Higher preconception maternal and paternal vitamin B12 was tied to fewer birth defects in a Shanghai cohort of 3032 couples.
|Articles|August 1, 2002
Pediatric Puzzler: All in her head? Intermittent headache and vomiting in a 12-year-old
A 12-year-old girl complains of headache and vomiting. The symptoms developed two weeks earlier, she reports, and have occurred intermittently since. Pain persists severely for five to 15 minutes and then dully thereafter.
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