@article{Örtqvist2013,
author = {Örtqvist, A.K. and Lundholm, C. and Wettermark, B. and Ludvigsson, J.F. and Ye, W. and Almqvist, C. },
title= {Validation of asthma and eczema in population‐based Swedish drug and patient registers},
year = {2013},
doi = {10.1002/pds.3465},
journal = {Pharmacoepidemiology and Drug Safety},
volume = {22},
number = {8},
pages = {850−860},
}