Erratum to: Short-term forecasting of the prevalence of clinical trachoma: utility of including delayed recovery and tests for infection. Issue 1 (December 2016) - Liu, Fengchen; Porco, Travis; Amza, Abdou; Kadri, Boubacar; Nassirou, Baido; West, Sheila; Bailey, Robin; Keenan, Jeremy; Lietman, Thomas