1. Popper K: The Logic of Scientific Discovery. 1959, London, UK: Routledge
2. Evans M, Heads J: Mastitis: Incidence, prevalence and cost. Breastfeed Rev. 1995, 3 (2): 65-71.
3. Potter B: A multi-method approach to measuring mastitis incidence. Community Pract. 2005, 78: 169-173.
4. Everitt BS, Palmer C: Encyclopaedic Companion to Medical Statistics. 2006, UK: Wiley and sons, 1
5. Kinlay JR, O’Connell DL, Kinlay S: Incidence of mastitis in breastfeeding women during the six months after delivery: a prospective cohort study. Med J Aust. 1998, 169: 310-312.