1. Persistent perplexing pyrexia: some comments on etiology and diagnosis;Molavi, A.; Weinstein, L.;Med Clin North Am,1970
2. Fever of unknown origin;Dinarello, C.A.; Wolff, S.M.,1990
3. Fever of unknown origin. An old friend revisited;Petersdorf, R.G.;Arch Intern Med,1992
4. Fever of unexplained origin: report of 100 cases;Petersdorf, R.G.; Beeson, P.B.;Medicine (Baltimore)
5. Fever of undetermined origin: diagnosis and follow-up of 105 cases 1970-1980;Larson, E.B.; Featherstone, H.J.; Petersdorf, R.G.;Medicine (Baltimore),1982