M. Lizakowska-Kmieć

Vitamin D deficiency during winter months among an adult, predominantly urban, population in Northern Poland.

K. Sworczak, P. Waszak, M. Żmijewski, 2014, Endokrynologia Polska.

Widespread vitamin D deficiency among adults from northern Poland (54°N) after months of low and high natural UVB radiation.

K. Sworczak, M. Żmijewski, P. Kmieć, 2015, Endokrynologia Polska.