@misc{indiciaebacd44df1acf,
  title = {Primary pulmonary hypertension.},
  author = {N el-Sherif and Z M el-Ramli and A H Sorour},
  year = {1968},
  url = {https://pubmed.ncbi.nlm.nih.gov/5723099/},
  note = {Source identifier: 5723099}
}