Placental mesenchymal stem cells: A novel autologous stem cell graft for peripartum neural regeneration? - Portmann-Lanz, CB; Mohr, S; Schoeberlein, A; Huber, A; Sager, R; Malek, A; Holzgreve, W; Surbek, DV (Geburtshilfe und Frauenheilkunde, 2006)