1. Civilisation and peptic ulcer;Susser;Lancet,1962
2. Period effects, generation effects and age effects in peptic ulcer mortality;Susser;J Chron Dis,1982
3. Principles of epidemiology;Taylor,1964
4. Epidemiology-principles and methods;MacMahon,1970
5. Causal thinking in the health sciences: concepts and strategies of epidemiology;Susser,1973