Crossref

1. Vitamin D deficiency in hepatitis C virus infection: what is old? what is new?

- Chao-Nan Jin

- Jing-Dan Chen

- Ji-Fang Sheng

2. The Role of Vitamin D in the Immune System as a Pro-survival Molecule

- Salvatore Chirumbolo

- Geir Bjørklund

- Andrea Sboarina

- Antonio Vella