Servetus, a Spanish physician who was the first to accurately describe cardiopulmonary circulation, is perhaps best remembered for his theological writings, which ultimately led to his execution. His religious views, particularly his denial of the Trinity, alienated Roman Catholics and Protestants alike and led to his arrest and imprisonment in 1553. He escaped but was soon rearrested, convicted of heresy, and burned at the stake. What modern Christian sects consider him a spiritual ancestor? Discuss