Association between cardiac autonomic regulation, visceral adipose tissue, cardiorespiratory fitness and ambient air pollution: 4HAIE study (Program–4) - Tomas Dostal; Martina Dankova; Tomas Barot; Dominik Sindler; Petr Kutac; Vera Jandackova; Daniel Jandacka; Peter Hofmann; Lukas Cipryan (PLoS ONE)