Posterior lamellar versus bilamellar tarsal rotation surgery for trachomatous trichiasis in Ethiopia: a randomised controlled trial oleh Esmael Habtamu, MSc, Tariku Wondie, BA, Sintayehu Aweke, MPH, Zerihun Tadesse, MD, Mulat Zerihun, MPH, Zebideru Zewudie, MPH, Amir Bedri Kello, MD, Chrissy H Roberts, PhD, Paul M Emerson, PhD, Robin L Bailey, PhD, David C W Mabey, DM, Saul N Rajak, PhD, Kelly Callahan, MPH, Helen A Weiss, PhD, Dr. Matthew J Burton, PhD