PubMed:: "Heparin, Low-Molecular-Weight"[Mesh] OR low molecular weight heparin*[tiab] OR lmwh[tiab] OR dalteparin*[tiab] OR enoxaparin*[tiab] OR clexan*[tiab] OR nadroparin*[tiab] OR fraxiparin*[tiab];; Embase.com:: 'low molecular weight heparin'/exp OR ('low molecular weight' NEXT/1 heparin*):ab,ti OR lmwh:ab,ti OR dalteparin*:ab,ti OR enoxaparin*:ab,ti OR clexan*:ab,ti OR nadroparin*:ab,ti OR fraxiparin*:ab,ti
