Dr Bagshaw will point to Swiss research published last year which found professional pilots were less likely to suffer DVT than the general population, and 16 out of 27 pilots who did had well recognised, pre-disposing factors.

BBC: Jury out on DVT link say airlines

Indeed, my professional career and my published works demonstrate my commitment to protecting constitutional liberties for all Americans.

CENTERFORSECURITYPOLICY: Center For Security Policy

For the past 25 years he served as Senior Research Scientist at ETR Associates in California, USA. Over his professional career, he published the most definitive systematic reviews on the effectiveness of sex, relationships and HIV education in schools and is widely recognised as the leading world expert on sex, relationships and HIV education curriculum standards.

UNESCO: EDUCATION