Aon Risk Services, a subsidiary of Aon Corporation (NYSE: AOC), today announced that it has entered into an agreement with LMS Medical Systems (AMEX: LMZ) Toronto, a healthcare technology company and developer of the CALM™ system (Computer Assisted Labor Management), to assist hospitals to improve their risk management profile in obstetrics.

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Obstetrics is well recognized as a highly complex specialty where medical professionals are required to make repeated timely and precise interpretation of changing physiological markers for both mother and baby as labor evolves. Failing to identify and or respond to any number of factors during labor and delivery can negatively impact outcomes. In addition, the absence of standardization of interpretation and care has led to the current overuse, under-use and misuse of clinical resources and interventions, all of which have placed a significant financial burden on medical staff and payors alike.

Over the past decade, obstetrics has become one of the most litigated areas in healthcare in the United States and elsewhere. It is therefore no surprise that hospitals, clinicians and risk managers are looking to improve outcomes, increase patient safety and enhance their overall risk profile.

Aon Healthcare works with health care facilities across the United States to help them maximize their "return on risk" by analyzing their risk profiles, providing front-end tools and delivering process-driven products that support better access and affordability of insurance for institutions and practitioners alike. Given the often-direct correlation between the quality of medicine in an organization and the cost of risk, providers can no longer afford to treat the two as unrelated.

"Many providers are looking for ways to build risk reduction strategies that will yield improved actuarial loss projections," said Matthew Rice, a vice president with Aon Healthcare. "This is possible with the collaboration of forward-thinking underwriters, innovative product and service providers who structure their offering with both quality and risk in mind, and internal and external data. Together with LMS, Aon can bring innovative risk reduction solutions to obstetrical providers."

LMS specializes in risk management tools for obstetrics. These tools analyze the dynamics of physiological indicators during childbirth for mother and baby. CALM Curve provides for the consistent and objective assessment of the progress of labor. Better labor assessment may lead to a more timely and appropriate use of cesarean sections. CALM Patterns provides objective, real-time detection, classification and labeling of fetal heart rate patterns. Better assessment of fetal distress may reduce the incidence and severity of birth related brain damage.

"LMS tools provide insight that will help clinical teams make the right decisions for their patients at the right time for the right reasons," said Diane Cote, CEO of LMS. "This initiative with Aon provides a platform for healthcare facilities, their physicians, nurses, risk managers and insurers to work together in support of better outcomes, improved safety and reduced risk."

About Aon

Aon Corporation ( http://www.aon.com/ ) is a leading provider of risk management services, insurance and reinsurance brokerage, human capital and management consulting, and specialty insurance underwriting. The company employs approximately 48,000 professionals in its 500 offices in more than 120 countries. Backed by broad resources, industry knowledge and technical expertise, Aon professionals help a wide range of clients develop effective risk management and workforce productivity solutions.

Aon Healthcare is dedicated to solving business, patient outcome and human capital risk issues for health care. Aon Healthcare coordinates services of its national, regional and local expertise as a seamless team. Comprehensive expertise includes medical professional, managed care, captives, claims and risk control, benefits design and management, compensation consulting, HR, financial risk management, Return on Risk strategies, and change management.

About LMS

LMS Medical Systems ( http://www.lmsmedical.com/ ) is a leader in the application of advanced mathematical modeling and neural networks for medical use. The LMS Computer Assisted Labor Management product suite provides physicians, nursing staff and risk managers with innovative obstetrical decision support and risk management tools integrated into robust clinical information systems designed to improve outcomes and patient care for mothers and their infants during labor and delivery.

  For further information please contact: Thaddeus Woosley, Aon Corporation
                                          Tel: (312) 381-2446
                                          Email: thaddeus_woosley@aon.com
                                          Website: http://www.aon.com/

                                          Andrea Miller, Communications
                                          LMS Medical Systems Inc.
                                          Tel: (514) 488-3461 Ext. 222
                                          Fax: (514) 488-1880
                                          E-mail investor@lmsmedical.com
                                          Website: http://www.lmsmedical.com/

This press release contains certain statements related to future results, or states our intentions, beliefs and expectations or predictions for the future which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from either historical or anticipated results depending on a variety of factors. Potential factors that could impact results include: general economic conditions in different countries in which we do business around the world, changes in global equity and fixed income markets that could affect the return on invested assets, fluctuations in exchange and interest rates that could influence revenue and expense, rating agency actions that could affect our ability to borrow funds, funding of our various pension plans, changes in the competitive environment, changes in commercial property and casualty markets and commercial premium rates that could impact revenues, changes in revenues and earnings due to the elimination of contingent commissions, other uncertainties surrounding a new compensation model, the impact of regulatory investigations brought by state attorneys general and state insurance regulators related to our compensation arrangements with underwriters and related issues, the impact of class actions and individual lawsuits including derivative actions and claims under ERISA, the cost of resolution of other contingent liabilities and loss contingencies, and the difference in ultimate paid claims in our underwriting companies from actuarial estimates. Further information concerning the Company and its business, including factors that potentially could materially affect the Company's financial results, is contained in the Company's filings with the Securities and Exchange Commission.

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SOURCE: Aon Corporation

CONTACT: Thaddeus Woosley of Aon Corporation, +1-312-381-2446,
thaddeus_woosley@aon.com , or Andrea Miller, Communications, of LMS Medical
Systems Inc., +1-514-488-3461 Ext. 222, fax, +1-514-488-1880,
investor@lmsmedical.com

Web site: http://www.aon.com/
http://www.lmsmedical.com/