We extend previous results on generalized Cauchy difference equations (in which f = g = h) to functional equations of the form $$f(x)+g(y)-h(x+y)=k(L(x,y))$$where L is a given function and f, g, h, k are unknown. We prove results assuming either that L is ...
We also believe that a prospective longitudinal cohort study should be performed in patients with PEX to determine the relative risk of serious cardiovascular events in relation to other risk factors. Conflict of interest The authors declare no conflict of interest. References 1 Yusuf IH. Pseudo...