TY - JOUR T1 - Design of a randomised, double-blind, crossover, placebo-controlled trial of effects of sildenafil on cerebrovascular function in small vessel disease: Oxford haemodynamic adaptation to reduce pulsatility trial (OxHARP) JO - European stroke journal PY - 2021/06/23 AU - Webb A AU - Werring D AU - Dawson J AU - Rothman A AU - Lawson A AU - Wartolowska K ED - VL - 6 IS - 3 SP - 283 EP - 290 Y2 - 2025/05/29 ER -