[1] Tribhuvan Univ, Inst Med, Dept Child Hlth, Kathmandu, Nepal
[2] Univ Bergen, Ctr Int Hlth, Bergen, Norway
[3] Univ Bergen, Ctr Intervent Sci Maternal & Child Hlth, Bergen, Norway
[4] Univ Hosp North Norway, Dept Microbiol & Infect Control, Tromso, Norway
[5] Tribhuvan Univ, Inst Med, Dept Radiol, Kathmandu, Nepal
[6] Kathmandu Univ, Kathmandu Med Coll, Dept Radiol, Kathmandu, Nepal
[7] Kathmandu Univ, Teaching Hosp, Kathmandu, Nepal
[8] Statens Serum Inst, Dept Infect Dis Epidemiol, Div Natl Hlth Surveillance & Res, DK-2300 Copenhagen, Denmark
[9] Norwegian Inst Publ Hlth, Dept Int Publ Hlth, Oslo, Norway
[10] Innlandet Hosp Trust, Div Med Serv, Lillehammer, Norway