1. Gastrointestinal haemorrhage and salicylates;Alvarez, A.S.; Summerskill, W.H.J.;Lancet,1958
2. Measurement of gastrointestinal bleeding using radioactive chromium;Bannerman, R.M.;Brit. med. J,1957
3. Analgesic effectiveness and safety of N-acetyl-para-aminophenol;Batterman, R.C.; Grossman, A.J.;Fed. Proc,1955
4. Gastrointestinal blood loss measured by radioactive chromium;Cameron, A.D.;Gut,1960
5. N-acetyl-p-aminophenol (Tylenol Elixir) as a pediatric antipyretic-analgesic;Cornely, D.A.; Ritter, J.A.;J. Amer. med. Ass,1956