PubMed limited:: "Cicatrix"[Mesh] OR cicatr*[tiab] OR scar[tiab] OR scars[tiab] OR scarring[tiab];; PubMed extensive:: "Cicatrix"[Mesh:noexp] OR "Cicatrix, Hypertrophic"[Mesh] OR contractur*[tiab] OR scar*[tiab] OR cicatri*[tiab] OR hypertroph*[tiab];; Cochrane Library extensive:: (contractur* OR scar* OR cicatri* OR hypertroph*):ti,ab,kw