Holvik, K., Meyer, H. E., Søgaard, A. J., Haug, E., & Falch, J. A. (2007). Pakistanis living in Oslo have lower serum 1,25-dihydroxyvitamin D levels but higher serum ionized calcium levels compared with ethnic Norwegians. The Oslo Health Study. BioMed Central.

Holvik, Kristin, Haakon E. Meyer, Anne Johanne Søgaard, Egil Haug, and Jan A. Falch. Pakistanis Living in Oslo Have Lower Serum 1,25-dihydroxyvitamin D Levels but Higher Serum Ionized Calcium Levels Compared With Ethnic Norwegians. The Oslo Health Study. BioMed Central, 2007.

Holvik, Kristin, et al. Pakistanis Living in Oslo Have Lower Serum 1,25-dihydroxyvitamin D Levels but Higher Serum Ionized Calcium Levels Compared With Ethnic Norwegians. The Oslo Health Study. BioMed Central, 2007.