RT Book, Section SR Electronic(1) A1 McMillan, Matt YR 2016 T1 When the drugs don’t work: breakthrough pain T2 BSAVA Congress Proceedings 2016 PB British Small Animal Veterinary Association DO 10.22233/9781910443446.38.2 UL https://www.bsavalibrary.com/content/chapter/10.22233/9781910443446.ch38sec2