Published in
Dove Press, International Journal of Chronic Obstructive Pulmonary Disease, (Volume 12), p. 2583-2592
DOI: 10.2147/copd.s132117
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Effects of daily vitamin D supplementation on respiratory muscle strength and physical performance in vitamin D-deficient COPD patients: a pilot trial
Journal article published in 2017 by
Rachida Rafiq,
Prins Hj,
Hendrik Prins,
Wim Boersma,
Boersma Wg,
Johannes Daniels 
,
Daniels Jm,
Martin den Heijer ,
Paul Lips,
de Jongh Rt,
Renate de Jongh
,
Daniels Jm,
Martin den Heijer ,
Paul Lips,
de Jongh Rt,
Renate de Jongh
This paper is made freely available by the publisher.
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