RT Book, Section SR Electronic(1) A1 Barrett, Esther L. YR 2020 T1 Where do you start with ultrasound? T2 BSAVA Congress Proceedings 2020 PB British Small Animal Veterinary Association DO 10.22233/9781910443774.43.2 UL https://www.bsavalibrary.com/content/chapter/10.22233/9781910443774.ch43sec2