Vagus nerve stimulation inhibits cytokine production and attenuates disease severity in rheumatoid arthritis. - Koopman FA; Chavan SS; Miljko S; Grazio S; Sokolovic S; Schuurman PR; Mehta AD; Levine YA; Faltys M; Zitnik R; Tracey KJ; Tak PP (Proceedings of the National Academy of Sciences of the United States of America, 2016)