NPPB and myalgic encephalomeyelitis/chronic fatigue syndrome: In multivariable analysis, CFS ≥ 5 (Aor = 2.07, 95% CI 1.03-4.17), abnormal hs-cTn (aOR = 2.52, 1.25-5.06), and NT-proBNP per doubling (aOR = 1.38, 1.12-1.71) independently predicted SCEs.