Severe Influenza-associated Respiratory Infection in High HIV Prevalence Setting, South Africa, 2009–2011 oleh Cheryl Cohen, Jocelyn Moyes, Stefano Tempia, Michelle Groom, Sibongile Walaza, Marthi Pretorius, Halima Dawood, Meera Chhagan, Summaya Haffejee, Ebrahim Variava, Kathleen Kahn, Akhona Tshangela, Anne von Gottberg, Nicole Wolter, Adam L. Cohen, Babatyi Kgokong, Marietjie Venter, Shabir A. Madhi