[1
]
Division of Gastroenterology, Hepatology, and Nutrition, The Children's Hospital of
Philadelphia, Philadelphia, Pennsylvania.
[2
]
Department of Biochemistry and Biophysics, Perelman School of Medicine, University
of Pennsylvania, Philadelphia, Pennsylvania.
[3
]
Department of Microbiology, Perelman School of Medicine, University of Pennsylvania,
Philadelphia, Pennsylvania.
[4
]
Department of Biostatistics and Epidemiology, Perelman School of Medicine, University
of Pennsylvania, Philadelphia, Pennsylvania.
[5
]
Department of Biostatistics and Epidemiology, Perelman School of Medicine, University
of Pennsylvania, Philadelphia, Pennsylvania; Division of Gastroenterology, Perelman
School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
[6
]
Department of Emergency Medicine, University of Maryland, Baltimore, Maryland.
[7
]
Department of Biochemistry and Biophysics, Perelman School of Medicine, University
of Pennsylvania, Philadelphia, Pennsylvania. Electronic address: vinograd@mail.med.upenn.edu.
[8
]
Division of Gastroenterology, Perelman School of Medicine, University of Pennsylvania,
Philadelphia, Pennsylvania. Electronic address: gdwu@mail.med.upenn.edu.