According to Kidese Tadesse, the Ethiopian Athletics Federation (EAF) senior medical expert in athletics, athletes undergo both blood and urine tests.

Source: https://allafrica.com/stories/202312160076.html

Ali Wong is also an expert in physical comedy.

Source: https://collider.com/ali-wong-comedy-specials/

And I'm not an expert in chemistry, but I guess from the isotope ratio or the mixture of elements, they concluded it was not made on Earth.'

Source: https://www.dailymail.co.uk/news/article-12838131/Secrets-Area-51-Metallic-egg-shaped-UFO-1980s-whistleblower-claims.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

An expert in moss — a bryologist — she describes mosses as the “coral reefs of the forest.”

Source: https://onbeing.org/programs/janine-benyus-biomimicry-an-operating-manual-for-earthlings/

An expert in Puglia-style pasta, earning herself the nickname “The Pasta Machine,” Nonna Dora herself sat at the front of the station, hand-cutting and rolling every individual piece of pasta that made it to our plates.

Source: https://nyunews.com/culture/dining/2023/10/16/nycwff-peronis-taste-italy/

As an expert in getting huge volumes of things to where they needed to be and on time, he was recruited to help out with Montreal’s 1976 Olympics, where he organized the warehouse.

Source: https://www.reddeeradvocate.com/news/three-generations-of-ambrose-family-have-served/

As an expert in talent optimization, one topic I’m often asked to speak about is "How to Build a Dream Team."

Source: https://www.forbes.com/sites/forbescoachescouncil/2023/01/03/build-a-dream-team-with-the-talent-optimization-framework/

As such, the Company is pleased to announce the retention of the Firms, a leading expert in naked short selling and stock manipulation, to assist in the development of a strategy to address these issues.

Source: https://seekingalpha.com/article/4575450-cosmos-health-shareholder-friendly-news-abounds-stock-still-undervalued?source=feed_all_articles

“But Vision Long Island is more of an expert in the field.”

Source: https://greatneckrecord.com/whats-next-for-great-neck/

Cziczo, professor and head of the Department of Earth, Atmospheric, and Planetary Sciences in Purdue's College of Science, is an expert in who has spent decades studying this rarefied region.

Source: https://phys.org/news/2023-10-signatures-space-age-spacecraft-metals.html

Daugherty recently gave a talk at the Nasdaq Entrepreneurial Center where she described herself as an expert in her field.

Source: https://www.siliconrepublic.com/careers/neurodiversity-work-autism-adhd-employment-reasonable-accommodations

"He would not have been the F1 expert in front of the cameras.

Source: https://www.birminghammail.co.uk/news/midlands-news/michael-schumacher-health-update-hes-28359974

I also do not claim to be an expert in ethics or true crime.

Source: https://www.deseret.com/2022/9/30/23364132/is-true-crime-media-immoral

If any alternative or substitute treatments are necessitated by the current shortage, they must be determined by a clinician who knows the patient and is expert in the complexities of psychopharmacology in general and of ADHD in particular.

Source: https://medcitynews.com/2023/02/the-adderall-shortage/

If I have a doubt in any area I’m not an expert in, there’s always someone from the program that I can reach out to.

Source: https://communitynewspapers.com/florida-international-university/fiu-engineering-management-program-takes-alumna-to-the-next-level/

“If you didn’t already have a very good understanding of that area of law, it would be very hard for you to work that out,” solicitor Peter Church, an expert in data privacy at Linklaters, told the Thomson Reuters Foundation.

Source: https://www.csmonitor.com/USA/Justice/2023/0530/AI-in-the-courtroom-Judges-enlist-ChatGPT-help-critics-cite-risks?icid=rss

Instead, he contacted a friend in the U.S., an expert in banking computer fraud, and begged him to fly over to solve the crisis.

Source: https://www.dailymail.co.uk/news/article-12417447/The-Bangladeshi-German-Filipino-American-job-McMafia-author-MISHA-GLENNY-reveals-biggest-bank-heist-time-pulled-complex-hacking-plan-innocuous-spelling-mistake-cost-cyber-criminals-millions.html?ns_mchanne

In your mind, this person is an expert in his/her field, he/she knows what he/she is talking about.

Source: https://metrocebu.news/how-to-attract-prospects-to-your-business-magnetically/?utm_source=rss&utm_medium=rss&utm_campaign=how-to-attract-prospects-to-your-business-magnetically

It is not clear exactly what provocation North Korea is referring to, but an expert in he matter claims that the North is now going to rebuild the 10 frontline posts it was forced to destroy five years ago, and add “better weapons” to the area.

Source: https://www.dailystar.co.uk/news/world-news/north-korea-scraps-weapons-pact-31507013

Khalili, an expert in gender and the rights of women and girls, and a former prosecutor in Afghanistan, recently moved to the United States from her native Afghanistan after the Taliban of the government in August of 2021.

Source: https://loyolamaroon.com/10038177/showcase/loyola-hosts-inaugural-international-womens-day-event/