John Mersch, MD, FAAP Dr. Mersch received his Bachelor of Arts
degree from the University of California, San Diego, and prior
to entering the University Of Southern California School Of
Medicine, was a graduate student (attaining PhD candidate
status) in Experimental Pathology at USC. He attended internship
and residency at Children's Hospital Los Angeles. William C.
Shiel Jr., MD, FACP, FACR Dr. Shiel received a Bachelor of
Science degree with honors from the University of Notre Dame.
There he was involved in research in radiation biology and
received the Huisking Scholarship. After graduating from St.
Louis University School of Medicine, he completed his Internal
Medicine residency and Rheumatology fellowship at the University
of California, Irvine. He is board-certified in Internal
Medicine and Rheumatology. - Croup is an infection of the
larynx, trachea, and the bronchial tubes usually caused by
viruses, less often caused by bacteria. - Croup is contagious,
especially during the first few days of illness.