Complex sentence: Bodog Felix Beck (1871-1942) was a physician who specialised in the of arthritic and rheumatoid conditions using bee venom and who coined the term "bee venom therapy".
Split into simpler sentences: Bodog Felix Beck (1871-1942) was a physician who specialised in the of arthritic and rheumatoid conditions using bee venom. Beck specialised in the treatment of arthritic and rheumatoid conditions using bee venom and coined the term "bee venom therapy".