EVerT: cryotherapy versus salicylic acid for the treatment of verrucae – a randomised controlled trial oleh S Cockayne, M Curran, G Denby, F Hashmi, C Hewitt, K Hicks, S Jayakody, A Kang’ombe, C McIntosh, N McLarnon, E Stamuli, K Thomas, G Turner, D Torgerson, I Watt