original: According to a letter sent to his church, he and his doctors believed that the cancer was fully treatable.
simplifications: based on the letter to the church, he and his doctors though the cancer was treatable. Based on the letter, he and his doctors thought that the cancer was treatable. In a letter sent to his church, he and his doctors believed the cancer was treatable. In a letter to his church, he stated that he and his doctors believed the cancer was treatable. According to a letter to his church, he and his doctors believed the cancer was treatable. He and his doctors believed that the cancer could be treated. A letter was sent to his church. The letter said he and his doctors believed the cancer was treatable. The letter that he and the doctors sent to the church stated that they believed that the cancer was treatable. A letter sent to his church states that he and his doctors believed that the cancer was fully treatable. He and his doctors believed that the cancer was fully treatable, according to the letter his church received.