Role of thoracic ultrasonography in pleurodesis pathways for malignant pleural effusions (SIMPLE): an open-label, randomised controlled trial by Psadillas, I, Hassan, M, Yousuf, A, Duncan, T, Leyakathali Khan, S, Blyth, KG, Evison, M, Corcoran, JP, Barnes, S, Reddy, R, Bonta, PI, Bhatnagar, R, Kagithala, G, Dobson, M, Knight, R, Dutton, SJ, Luengo-Fernandez, R, Hedley, E, Piotrowska, H, Brown, L, Musa Asa’ari, KA, Mercer, RM, Asciak, R, Bedawi, EO, Halifax, RJ, Slade, M, Benamore, R, Edey, A, Miller, RF, Mackell, NA, Rahman, NM