"Given nutrigenomic papers/text title 'Common Variants in CYP2R1 and GC Genes Predict Vitamin D Concentrations in Healthy Danish Children and Adults'. Please extract information in json format like this: 
{
Gene: ...,
rsID: ...,
NAME_1: ...,
Study Methodology: ...,
Study Level: ...,
Population: ...,
Conclusion: ...,
Publisher: ...,
Publication Year: ...
}" You should write your response with 150 or more words.
user