A new publication from Van Campen, Rowe, and Visser on the effect of sitting up in severe ME:
https://www.mdpi.com/2227-9032/8/4/394
Earlier this year they published a similar study on the effect of tilting the head in severe ME...
frans visser
https://forums.phoenixrising.me/attachments/sittingupinbed-jpeg.44034/
linda van campen
orthostatic intolerance
peter rowe
severe me
severe me/cfs
severely ill