Table 1 Search strategies for Medline.

From: Efficacy of laryngeal mask airway against postoperative pharyngolaryngeal complications following thyroid surgery: a systematic review and meta-analysis of randomized controlled studies

1

("Thyroid surger*" or "Thyroidectom*" or "Parathyroid surgery" or "Thyroid" or "goiter" or "Parathyroid").mp

2

exp "Endocrine Surgical Procedures"/

3

("LMA" or "Laryngeal mask airway*" or "Laryngeal Mask" or "supraglottic airway device*" or "supraglottic").mp

4

exp "Laryngeal Masks"/ or exp "Masks"/

5

(1 or 2) and (3 or 4)

6

7 and (((randomized controlled trial or controlled clinical trial).pt. or randomi*ed.ab. or placebo.ab. or drug therapy.fs. or randomly.ab. or trial.ab. or groups.ab.) not (exp animals/ not humans.sh.))

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