Eijkemans, Marianne ; Mommers, Monique ; Draaisma, Jos M. Th.. Eijkemans , M , Mommers , M , Draaisma , J M T , Thijs , C & Prins , M H 2012 , ' Physical Activity and Asthma: A Systematic Review and Meta-Analysis ' , PLOS ONE , vol. 7 , no. 12 , e50775 . https://doi.org/10.1371/journal.pone.0050775.
,
2012