Complex sentence: Meyers (1985), 505--507 Months later in Venice, Mary reported to friends the full extent of Hemingway's injuries: two cracked discs, a kidney and liver rupture, a dislocated shoulder and a broken skull.
Split into simpler sentences: Meyers (1985), 505--507 Months later in Venice, "according to Mary they learned the full extent of Hemingway's injuries". She reported to friends that he had two cracked discs, a kidney and liver rupture, a dislocated shoulder and a broken skull.