@article{2137,
  keywords = {Clinical Trials as Topic, Humans, Immunologic Techniques, Leprostatic Agents, leprosy, Research Design},
  author = {Ridley D S},
  title = {Problems in the design of medium and long-term therapeutic trials.},
  year = {1975},
  journal = {Leprosy review},
  volume = {46},
  pages = {59-61},
  month = {1975 Jun},
  issn = {0305-7518},
  url = {http://leprev.ilsl.br/pdfs/1975/v46s1/pdf/v46s1a08.pdf},
  doi = {10.5935/0305-7518.19750040},
  language = {eng},
}