Objectives: To evaluate reports that describe relapse or recurrence following treatment of perineal streptococcal dermatitis (PSD), we studied a large cohort of children with these perianal or ...

Tally Health’s CheekAge is a noninvasive cheek swab. Getty Images Most biochemical tests that predict a person’s biological age rely on blood DNA, but Tally Health’s CheekAge is a ...

“This implies that a simple, non-invasive cheek swab can be a valuable alternative for studying and tracking the biology of ageing,” study author Maxim Shokhirev says. Travel linked to slower ...