Stephens K, Cooper BA, West C, Paul SM, Baggott CR, Merriman JD, Dhruva A, Kober KM, Langford DJ, Leutwyler H, Luce JA, Schmidt BL, Abrams GM, Elboim C, Hamolsky D, Levine JD, Miaskowski C, Aouizerat BE. Associations between cytokine gene variations and severe persistent breast pain in women following breast cancer surgery. J Pain. 2014 Feb; 15(2):169-80.