Complex sentence: According to him, the next morning they received precise instructions for treatment by the doctors of the University Clinical Centre in Ljubljana, but did not implement them and transported the boy who had during the night lost consciousness, to Ljubljana with a "tourist transport".
Split into simpler sentences: According to him, the next morning they received precise instructions for treatment by the doctors of the University Clinical Centre in Ljubljana, but did not implement them. They transported the boy, who had lost consciousness during the night, to Ljubljana with a "tourist transport".