TY - JOUR AU - Leitner, G C; Gruber, R; Neumüller, J TI - Platelet content and growth factor release in platelet-rich plasma: a comparison of four different systems JO - Vox Sang IS - 02 VL - 91 PY - 2006 DO - 10.1111/j.1423-0410.2006.00815.x L3 - PubMed-ID: 16907874 SP - 135 EP - 139 ER -