@misc{indiciae1adcca1b8583,
  title = {Monitoring theophylline levels.},
  author = {T E Lackner},
  year = {1981},
  doi = {10.1056/nejm198107303050521},
  url = {https://pubmed.ncbi.nlm.nih.gov/7242627/},
  note = {Source identifier: 7242627}
}