Ask the Experts

Have a question and haven't found the answer? Ask one of PKIDs' experts for help. These four professionals give generously of their time throughout the year to help kids and their parents understand the diseases that challenge their lives.


Phil Rosenthal

Dr. Phil Rosenthal, Hepatology

Dr. Rosenthal is a Professor of Pediatrics and Surgery, the Medical Director of the Pediatric Liver Transplant Program, and the Director of Pediatric Hepatology at the University of California, San Francisco.


Dr. Paul Offit, Immunizations

Dr. Offit is Chief of the Section of Infectious Diseases and the Henle Professor of Immunologic and Infectious Diseases at The Children’s Hospital of Philadelphia.


Dr. Jane Aronson, Infectious Diseases

Dr. Aronson is the Executive Director of International Pediatric Health Services, New York City.


Dr. Sharon Humiston, Immunizations

Dr. Humiston is a Professor of Pediatrics at Children's Mercy Hospitals and Clinics, Kansas City, Missouri.

Mary Beth Koslap-Petraco

Dr. Mary Beth Koslap-Petraco, Advice Nurse

Dr. Mary Beth  is a pediatric nurse practitioner and Coordinator for Child Health at the Suffolk County Department of Health Services in Hauppauge, N.Y.

Important disclaimer: The information on is for educational purposes only and should not be considered to be medical advice. It is not meant to replace the advice of the physician who cares for your child. All medical advice and information should be considered to be incomplete without a physical exam, which is not possible without a visit to your doctor.

In the final analysis, the question of why bad things happen to good people transmutes itself into some very different questions, no longer asking why something happened, but asking how we will respond, what we intend to do now that it happened.

Harold S. Kushner