*Methodological Quality of Clinical Practice Guidelines for Pharmacological Prophylaxis… DOI: http://dx.doi.org/10.5772/intechopen.103660*

(clinicalguidelines.gov.au), Canadian Agency for Drugs and Technologies in Health (cadth.ca), International Guidelines Network (gin.net), ECRI Guidelines Trust (guide lines.ecri.org), Scottish Intercollegiate Guidelines Network (sign.ac.uk), Queensland Health (health.qld.gov.au), American Society of Hematology (hematology.org), American College of physicians (acponline.org), American College of chest physicians (chestnet.org), International Union of Angiology (angiology.org), National Institute


**Table 4.**

*Search strategy used in PubMed, Cochrane library, Embase, and Lilacs databases.*

for Health and care Excellence (nice.org.uk), National Guidelines Clearing House (guidelines.gov), European Society of Anesthesiology and intensive care (esaic.org), Thrombosis Canada (thrombosiscanada.ca). Search strategies are described in **Table 4**.
