Wadell, Göran; Edlund, Karin; Strand, Marten; Andersson, Emma; Öberg, Christopher; Elofsson, Mikael; Mei, Ya-Fang Patent: US2013/210915 A1, 2013 ; Location in patent: Paragraph 0238; 0239; 0240; 0241; 0242; 0295 ;