In Reply. —We appreciate the interest in our work and the opportunity to respond to the thoughtful comments of Dr Whit-more. There are many studies of vitamin D status in nonhomebound elderly, including the BLSA cohort.1-3 The control population in our study consisted of a subset of the BLSA. Sherman et al3 reported findings about the vitamin D status in this BLSA population in which participants were screened for diseases and for medications that affect calcium or vitamin D metabolism. The expected seasonal fluctuation was observed, but vitamin D status remained adequate. The vitamin D status also did not decline with age. In this population, without other factors interfering with vitamin D status, vitamin D deficiency generally does not occur. It is conceivable that differences in vitamin D status between the BLSA and other study groups exist because the BLSA represents a carefully screened, healthy ambulatory group. Other
Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature
Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal
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