Austin, Texas-based NarrativeDx, a startup that helps hospitals analyze patient comments, grievances and online reviews, has secured a strategic investment, according to a news release. NarrativeDx cofounder and CEO Kyle Robertson confirmed the investment amount is $3 million. Christiana Care Health System, the Texas Medical Center and Summation Health Ventures (a fund backed by MemorialCare Health System and Cedars-Sinai Health System) led the round. HealthX Ventures and Cultivation Capital, which took part in the startup's previous funding rounds, also participated. NarrativeDx intends to use the money to boost its sales and marketing efforts, continue innovating its product and hire new talent.