[1
]
Department of Neonatology, Tuebingen University Hospital, Tuebingen, Germany.
[2
]
Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton,
Ontario, Canada.
[3
]
Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton,
Ontario, Canada3Division of Neonatology, Children's Hospital of Philadelphia, University
of Pennsylvania, Philadelphia.
[4
]
Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada.
[5
]
Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada.
[6
]
Department of Neonatology, Bnai Zion Medical Center, Haifa, Israel.
[7
]
Centre Hospitalier Universitaire de Quebec, Quebec City, Quebec, Canada.
[8
]
Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Canada.
[9
]
Royal Alexandra Hospital, Edmonton, Alberta, Canada.
[10
]
Department of Pediatrics, University of Calgary, Calgary, Alberta, Canada.
[11
]
Department of Pediatrics, University of British Columbia, Vancouver, Canada.