title: Questions and answers.
authors.affiliation: a Gleneagles Medical Centre, Kuala Lumpur , Malaysia.
authors.forename: Leslie C
authors.initials: LC
authors.lastname: Lai
authors.affiliation: b MAHSA University, Kuala Lumpur , Malaysia.
authors.forename: Joseph
authors.initials: J
authors.lastname: Lopez
authors.affiliation: c Karolinska University Hospital , Sweden.
authors.forename: Anders
authors.initials: A
authors.lastname: Kallner