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Table 3 Papers excluded from the review

From: Helicobacter pylori infection and circulating ghrelin levels - A systematic review

  Reason for exclusion
Suzuki et al, 2006 [54] Did not report ghrelin levels in H pylori positive &H pylori negative patients
Nunes et al, 2006 [27] Not sufficient information in abstract and authors could not be contacted for further clarifications
Campana et al, 2007 [56] All subjects were H pylori negative
Isomoto et al, 2005 [52] Compared only H pylori strains
Checchi et al, 2007 [10] Did not compare serum ghrelin levels in H pylori positive &H pylori negative subjects
Wu et al, 2005[57] Did not assess ghrelin
Shinomiya et al, 2005[58] Did not compare the difference in ghrelin between H pylori positive &H pylori negative subjects
Suzuki et al, 2005[59] Did not assess ghrelin
Sundbom et al, 2007[60] Did not assess H pylori
Huang et al, 2007[61] Did not assess H pylori
Nishizawa et al, 2006[62] Did not assess H pylori
Ando et al, 2006[63] Did not assess ghrelin
Kempa et al, 2007[64] All subjects were H pylori negative
Ates et al, 2008[65] Did not assess H pylori
Wang et al, 2006[66] Did not assess ghrelin
Doki et al, 2006[67] Did not assess H pylori
Gao et al, 2008[68] Excluded people with H pylori
Cherian et al, 2009[69] Did not assess ghrelin
Kebapcilar et al, 2009[70] Did not assess ghrelin
Dutta et al, 2009[71] Did not assess ghrelin
Gen et al, 2010[72] Did not assess ghrelin
Taniaka-Shintani et al, 2005[1] Examined only ghrelin immunoreactive cells