https://frettin.is/2022/04/21/lyfjastofnun-svithjodar-stadfestir-aukna-haettu-a-hjartavodvabolgu-af-covid-boluefnum/
Lyfjastofnun Svíþjóðar staðfestir aukna hættu á hjartavöðvabólgu af Covid bóluefnum