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Table 1 Search strategy for systematic review

From: Effectiveness of immunoglobulin replacement therapy in preventing infections in patients with chronic obstructive pulmonary disease: a systematic review

COPD and immunoglobulin therapy search

1. Obstructive airway disease/or airway obstruction/or bronchus obstruction/or chronic obstructive lung disease/

2. Chronic bronchitis/

3. (Obstruct* adj3 (pulmonary or lung* or airway* or airflow* or bronch* or respirat*)).mp

4. ((Chronic* adj3 bronchiti*) or emphysema* or refractory asthma or chronic obstructive asthma or COPD or COAD or COBD or AECB).mp

5. Exp lung emphysema/

6. 1 or 2 or 3 or 4 or 5

7. Immunoglobulin G/ad, cm, cr, dv, do, it, dt, im, ip, tl, tr, iv, po, cj, sc, tp, td, tm [Drug Administration, Drug Comparison, Drug Concentration, Drug Development, Drug Dose, Drug Interaction, Drug Therapy, Intramuscular Drug Administration, Intraperitoneal Drug Administration, Intrathecal Drug Administration, Intratracheal Drug Administration, Intravenous Drug Administration, Oral Drug Administration, Subconjunctival Drug Administration, Subcutaneous Drug Administration, Topical Drug Administration, Transdermal Drug Administration, Unexpected Outcome of Drug Treatment]

8. (((Immunoglobulin* or IGG or IG or immune globulin* or gamma globulin* or gammaglobulin*) adj6 (therap* or treatment* or sub?cutaneous or intravenous or intra-venous or IV or oral or administration)) or IVIG).mp

9. 7 or 8

10. 6 and 9

11. Limit 10 to (animals and animal studies)

12. 10 not 11