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Table 2 Overview of the amount of scientific publications collected for each plant species after each step of the review process

From: Medicinal plants as therapeutic options for topical treatment in canine dermatology? A systematic review

Plant name (Latin) Calendula officinalis Hypericum perforatum Matricaria chamomilla Salvia officinalis
Plant name (English) Marigold St. John’s Wort (German) Chamomile Sage
All publications imported from WoSa and PMbafter removal of duplicates 536 2239 937 3319
After keyword search in titles and abstracts with EndNote 403 1728 683 1891
Included after manual screening of titles and abstracts 78 120 90 72
Pharmacognostic studies 36 42 21 34
Reviews 16 18 28 5
Publications on adverse effects 1 12 7 2
Finally included publications 25 48 34 31
Resulting referencesc 29 50 34 32
  1. aWeb of Science [28], bPubMed [27], cReference = one or several clinical, in vivo or in vitro trials of one plant species within one finally included publication (= one line in dditional file 3)