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Table 1 List of databases and search periods included in systematic search

From: A systematic review and meta-analysis of Harmonic Focus in thyroidectomy compared to conventional techniques

Databases

Search dates

EMBASE

Until 30th September 2014

MEDLINE (via PubMed)

CENTRAL

LILACS IBECS

Conducted between 26th and 30th September 2013

African Index Medicus, Index Medicus for Eastern and Mediterranean Region, Index Medcus for South-East Asia Region and The Western Pacific Region Index Medicus

African Journals Online

IndMed (India)

PakMediNet (Pakistan)

Türk Tip Veri Tabani (Turkey)

Krack (Croatia)

SID and IrMedex (Iran)

KoreaMed (Korea)

ICHUSHI-web (Japan)

Until 22nd April 2013

Wanfang, Cqvip, CNKI (China)

Until 16th April 2013