1. The influence of pregnancy on breast cancer risk: is it endocrinological or immunological?;Janerich;Med Hypotheses,1980
2. Evidence for a crossover in breast cancer risk factors;Janerich;Am J Epidemiol,1982
3. Age at first birth and breast cancer;MacMahon;Bull World Health Organ,1970
4. Birth characteristics of women dying from breast cancer;Standfast;JNCI,1967
5. Estrogen fractions during early reproductive life in the etiology of breast cancer;Cole;Lancet,1969