TNF and coronary artery disorder: From 2012 to 2021, “tumor necrosis factor,” “myocardial infarction,” “diesel exhaust,” “dna adduct,” “coronary heart disease,” “ultrafine particle,” “c reactive protein,” “biomass fuel,” “airborne particle,” “in vitro,” “diesel exhaust particle,” “urban air,” and “exhaust” started to attract attention in the early years (2012–2014), and in the middle stage (2015–2017) “systematic inflammation” and “hong kong” came into the spotlight.