Correction: Selecting One of Several Mating Types through Gene Segment Joining and Deletion in Tetrahymena thermophila

• Marcella D. Cervantes, 
• Eileen P. Hamilton, 
• Jie Xiong, 
• Michael J. Lawson, 
• Dongxia Yuan, 
• Michalis Hadjithomas, 
• Wei Miao, 
• Eduardo Orias