RT Journal Article SR Electronic T1 Pain alleviation during cryotherapy of plantar viral warts using a non-invasive vibratory device: a randomised intra-individually controlled trial JF BMJ Innovations JO BMJ Innov FD All India Institute of Medical Sciences SP 448 OP 451 DO 10.1136/bmjinnov-2020-000429 VO 7 IS 2 A1 Yun Pei Koh A1 Melissa M Chan A1 Xiahong Zhao A1 Lucinda Tan A1 Hong Liang Tey YR 2021 UL http://innovations.bmj.com/content/7/2/448.abstract AB