Editor's Letter Box Suspected Arsenical Poisoning: Fallacy of the Copper-test BMJ 1859; s4-1 doi: https://doi.org/10.1136/bmj.s4-1.139.706 (Published 27 August 1859) Cite this as: BMJ 1859;s4-1:706 Article Related content Metrics Responses Peer review Related articles No related articles found. See more Covid-19: Vaccine hesitancy and access affect uptake of new boosters BMJ October 02, 2023, 383 p2271; DOI: https://doi.org/10.1136/bmj.p2271 Clinicians raise concerns over pilot of blood test for multiple cancers BMJ October 02, 2023, 383 p2268; DOI: https://doi.org/10.1136/bmj.p2268 Environmental sustainability in healthcare systems: role of frugal innovation BMJ October 02, 2023, 383 e076381; DOI: https://doi.org/10.1136/bmj-2023-076381 Martha’s rule and patients’ rights to a second opinion BMJ October 02, 2023, 383 p2221; DOI: https://doi.org/10.1136/bmj.p2221 How to make “single use” surgical items more sustainable BMJ October 02, 2023, 383 p1524; DOI: https://doi.org/10.1136/bmj.p1524