Timing Of Primary Surgery for cleft palate (TOPS): protocol for a randomised trial of palate surgery at 6 months versus 12 months of age - Shaw, William; Semb, Gunvor; Lohmander, Anette; Persson, Christina; Willadsen, Elisabeth; Clayton-Smith, Jill; Kiemle-Trindade, Inge Elly; Munro, Kevin J.; Gamble, Carrol; Harman, Nicola; Conroy, Elizabeth J.; Weichart, Dieter; et al. (BMJ Open, 2020)