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Table 2 Search strategy used in Pubmed

From: Vitamin K prophylaxis in newborns

#4 Search (#1) AND #2 Filters: published in the last 10 years
#3 Search (#1) AND #2
#2 Search (haemorrhagic disease of the newborn [Title/Abstract]) OR vitamin K deficiency [Title/Abstract]
#1 Search ((newborn*[Title/Abstract]) OR infant*[Title/Abstract]) OR neonat*[Title/Abstract]