For the (K) “belief in having had long COVID” (psychosomatic) French study thing see also https://www.lesswrong.com/posts/LETXrTsGAqJrcik3T/french-long-covid-study-belief-vs-infection
For the (K) “belief in having had long COVID” (psychosomatic) French study thing see also https://www.lesswrong.com/posts/LETXrTsGAqJrcik3T/french-long-covid-study-belief-vs-infection