The Ahmed Versus Baerveldt study: design, baseline patient characteristics, and intraoperative complications.
Christakis PG, Tsai JC, Zurakowski D, Kalenak JW, Cantor LB, Ahmed II. The Ahmed Versus Baerveldt study: design, baseline patient characteristics, and intraoperative complications. Ophthalmology. 2011 Nov; 118(11):2172-9.