Hagerman, A.; Posfay-Barbe, K. . M.; Duppenthaler, A.; Heininger, U.; Berger, C.; The PIGS Influenza Study Group, .-. Clinical Characteristics and Outcomes in Children Hospitalised With Pandemic Influenza A/H1N1/09 Virus Infection – a Nationwide Survey by the Pediatric Infectious Diseases Group of Switzerland. Swiss Med Wkly 2015, 145, w14171.