@misc{9375,
  author = {R. Charlton and A. Hutchison and K. Davis and C. de Vries},
  title = {Asthma management in pregnancy},
  year = {2013},
  journal = {PLoS One},
  volume = {8},
  number = {4},
  pages = {e60247},
  issn = {1932-6203},
  doi = {10.1371/journal.pone.0060247},
}