Deformities of the shoulder in infants younger than 12 months with an obstetric lesion of the brachial plexus. - van der Sluijs,J.A.; van Ouwerkerk,W.J.; de Gast,A.; Wuisman,P.I.; Nollet,F.; Manoliu,R.A. (J Bone Joint Surg [Br], 2001)