Consumption of water containing a high concentration of molecular hydrogen reduces oxidative stress and disease activity in patients with rheumatoid arthritis: an open-label pilot study - Ishibashi, T; Sato, B; Rikitake, M; Seo, T; Kurokawa, R; Hara, Y; Naritomi, Y; Hara, H; Nagao, T (Med Gas Res, 2012)