Correction: Sandbox University: Estimating Influence of Institutional Action

A reference is omitted from the figure caption for Fig 2. Please see the complete, correct Fig 2 caption here. Fig 2 Convergence of MMST creation. The reference is: Forsman J, Van den Bogaard M, Linder C, Fraser D (accepted for publication 2014). Considering student retention as a complex system: a possible way forward for enhancing student retention. European Journal of Engineering Education.