Batsman Khawaja, 23, had been called up as standby for Clarke, who has suffered with a chronic back problem for much of his Test career and his condition flared while he was playing for New South Wales 10 days ago.

BBC: Ashes: Michael Clarke passed fit for first Gabba Test

The follow-up reveals that the first test was just a fluke or the result of a benign condition.

FORBES: Magazine Article

"With the current condition in the euro zone, today's Italian auction was a major test of sentiment, and it seems to have calmed investor nerves, " said Philip Shaw, chief economist at Investec Securities.

WSJ: European Stocks End Higher

The company is also developing a test to assess the risk of autism in children with no family history of the condition.

WSJ: Why Kids Get Autism: New Genetic Clues

Winning approval for Glybera proved particularly challenging because the company was only able to test it on 27 patients in clinical trials, due to the rarity of the condition.

MSN: European regulators back first gene therapy drug

Dr Stephen Lawrence of the Primary Care Diabetes Society said the low comprehensive test rates could be due to the increasing numbers of patients being diagnosed with the condition.

BBC: Health

People who are intersex could also have the condition and not be aware of it, as was the case of Indian athlete Santhi Soundarajan, who failed a gender test at the 2006 Asian games and was stripped of her medal.

CNN: Gender row athlete: What is intersexuality?