RT Journal Article SR Electronic T1 Early exposure to dogs and farm animals reduces risk of childhood asthma JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 80 OP 80 DO 10.1136/ebmed-2015-110373 VO 21 IS 2 A1 Iny Jhun A1 Wanda Phipatanakul YR 2016 UL http://ebm.bmj.com/content/21/2/80.abstract AB