OXIMETRY and SKIN COLOUR Is it a major factor? Lots of interest today https://t.co/RQS92TGhYW @bbchealth @guardiannews @HSJnews @Telegrap

OXIMETRY and SKIN COLOUR Is it a major factor? Lots of interest today https://t.co/RQS92TGhYW @bbchealth @guardiannews @HSJnews @Telegrap