[1] UCL, London, England
[2] Univ Coll Hosp, London, England
[3] Amsterdam UMC, Amsterdam, Netherlands
[4] Leids Univ Med Centrum, Amsterdam, Netherlands
[5] Mayo Clin Minnesota, Rochester, MN USA
[6] Wuhan Univ, Renmin Hosp, Wuhan, Peoples R China
[7] Tenwek Hosp, Tenwek, Kenya
[8] Swedish Med Ctr, Seattle, WA USA
[9] Hosp Puerto Montt, Puerto Montt, Chile
[10] Lahore Gen Hosp, Lahore, Pakistan
[11] Univ Med Ctr mainz, Mainz, Germany
[12] West Virginia Univ, Sch Med, Morgantown, WV USA
[13] Univ British Columbia, Vancouver, BC, Canada
[14] Natl Canc Ctr Hosp East, Kashiwa, Chiba, Japan
[15] Univ Oslo, Oslo, Norway