EP2707366B1 - L-Proline and Citric Acid Co-Crystals of (2s, 3r, 4r, 5s, 6r )- 2- (3- ((5- (4-Fluorophenyl)thiophen-2-Yl) Methyl) -4-Methylphenyl)-6- (hydroxymethyl)tetrahydro-2h-Pyran-3,4,5-Triol