An acclaimed pediatric heart surgeon shot and critically wounded his estranged wife in their Elmhurst home early Friday, then shot himself to death, authorities said. The 7 a.m. shootings that killed 52-year-old Dr. Hani Hennein and wounded his wife, Julia Hennein, came barely a month after she had filed for divorce and sought an order of protection against her husband of 30 years, court records show. The couple’s two youngest children were in the house when the shootings occurred but neither was injured, Elmhurst police said. Julia Hennein, also 52, was being treated for her wound at Loyola University Medical...