@misc{indiciaea99546a1e3aa,
  title = {Determination of hyperforin in human plasma using solid-phase extraction and high-performance liquid chromatography with ultraviolet detection.},
  author = {Yanyan Cui and Bill Gurley and Catharina Y W Ang and Julian Leakey},
  year = {2002},
  doi = {10.1016/s1570-0232(02)00439-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/12383488/},
  note = {Source identifier: 12383488}
}