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IP address: 44.206.227.65
Time: 2024-03-28T12:59:50Z
URL: http://scholar.google.com/scholar_lookup?title=Hay+fever%2C+hygiene%2C+and+household+size.&year=1989&author=Strachan&journal=BMJ.&volume=299&issue=6710&pages=1259-1260&doi=10.1136%2Fbmj.299.6710.1259&pmid=2513902