@misc{indiciae227dc9ceef01,
  title = {Community-based research--a framework for problem formulation: the case of upper endoscopy for gastroesophageal reflux disease.},
  author = {M Helfand and M A Oehlke and D A Lieberman},
  doi = {10.1177/0272989x9701700308},
  url = {https://pubmed.ncbi.nlm.nih.gov/9219192/},
  note = {Source identifier: 9219192}
}