Reply To: What is defination of sing? Share this post: Share on Twitter Share on Facebook Share on LinkedIn Share on Email Share on WhatsApp Share on Telegram October 14, 2020 at 9:04 am #1295 Anukriti PandeyParticipant Abnormalities seen or measured by people other than patient Share this post: Share on Twitter Share on Facebook Share on LinkedIn Share on Email Share on WhatsApp Share on Telegram