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We thank the authors for the interest in our article
[1], and for highlighting these points. We agree on the superiority of
tandem mass spectrometry (TMS) over radioimmunoassay for vitamin D
estimation. We could not measure vitamin D using TMS due to logistic
concerns, and this can be considered as a limitation of our study.
R 2 was
maximum in model 3 (afternoon sun index), as also mentioned in text
‘Maximum R2 (0.367) was
achieved in Model 3 when afternoon sun index replaced cumulative sun
index in the model. We regret the printing error in the table where
values of morning and afternoon Sun index got interchanged.
References
1. Meena P, Dabas A, Shah D, Malhotra RK, Madhu SV, Gupta P. Sunlight
exposure and vitamin D status in breastfed infants. Indian Pediatr.
2017;54:105-11.
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