RT Journal Article SR Electronic T1 Occupational asthma caused by the predatory beneficial mites Amblyseius californicus and Amblyseius cucumeris JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 287 OP 287 DO 10.1136/oem.2009.049403 VO 67 IS 4 A1 SG Skousgaard A1 T Thisling A1 C Bindslev-Jensen A1 J Baelum YR 2010 UL http://oem.bmj.com/content/67/4/287.2.abstract AB