Littlewood, AnneAnneLittlewoodKloukos, DimitriosDimitriosKloukos0000-0002-0665-238X2024-10-282024-10-282019-06https://boris-portal.unibe.ch/handle/20.500.12422/180796In the past few issues, we have looked at how to construct a search for the main electronic databases. However, to get a very sensitive search and to combat publication bias, you may need to go further than looking at the standard databases. Searching the gray literature (items that are not published or published in noncommercial form) can be fruitful.1 Citation searching, handsearching, and web searching may also retrieve articles you may not find elsewhere.en600 - Technology::610 - Medicine & healtharticle10.7892/boris.1313223115351210.1016/j.ajodo.2018.12.016