https://api.elsevier.com/content/article/pii/S0306987721000050doi:10.1016/j.mehy.2021.1104871-s2.0-S030698772100005010.1016/j.mehy.2021.110487S0306-9877(21)00005-0What sunspots are whispering about covid-19? Medical HypothesesJournal030698772021-02-28February 20210falsefalse