BibTeX has spaces in front of the options that break the import

[ChristianJeskeArcim]

If I try to import this into endnote 21:

@Article{q2011a,
author = {Q., Al-Khalidi F. and R., Saatchi and D., Burke and H., Elphick and S, Tan},
date = {2011},
title = {Respiration rate monitoring methods: a review},
volume = {46},
pages = {523–529},
note = {10.1002/ppul.21416, PMID: - DOI - PubMed},
language = {en},
journal = {Pediatr. Pulmonol}
}

It does not work. If I remove the spaces in front of each option:

@Article{ahmed2010a,
author = {Ahmed, A.H. and Sands, L.P.},
title = {Effect of pre- and postdischarge interventions on breastfeeding outcomes and weight gain among premature infants},
date = {2010},
volume = {39},
pages = {53–63},
language = {en},
journal = {J. Obstet. Gynecol. Neonatal Nurs}
}

It will import the citation just fine (after telling endnote that date = year because there is no date field specified in the BibTeX import filter.

Are those spaces needed for something? If not can they be removed?