@misc{indiciaee63645218d2a,
  title = {Prolonged malaria prophylaxis.},
  author = {J H Kelsey},
  year = {1977},
  doi = {10.1136/bmj.2.6099.1415-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/589237/},
  note = {Source identifier: 589237}
}