More than 4,500 have been reported killed and 8,300 injured by the earthquake in northwest Syria, according to the UN - the bulk of the casualties reported from Syria, a country fractured by civil war since 2011.

Experts warn against going to extremes to look good on social media, to the point of endangering mental and physical health.

The International Council of Nurses says burn-out and stress has led millions of nurses to consider quitting the profession.