The trial is an extension to trials NN7008-3543 (start: March 2009, stop: September 2011) and NN7008-3545 (start: May 2010, stop: November 2011) and the pharmacokinetic trials NN7008-3600 (start: November 2010, stop: October 2011), NN7008-3893 (start: June 2011, stop: September 2011) and NN7008-4015 (start: August 2012, stop: March 2013).