Attribution 4.0 International (CC BY 4.0)
You can use this work for any purpose, including commercial uses, without restriction under copyright law. You should also provide attribution to the original work, source and licence. Read more about this licence.
Credit
Studying Trial Communities : Anthropological and Historical Inquiries into Ethos, Politics and Economy of Medical Research in Africa / P. Wenzel Geissler. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.