Breadth of antibodies to Plasmodium falciparum variant surface antigens is associated with immunity in a controlled human malaria infection study by Kimingi, HW, Kinyua, AW, Achieng, NA, Wambui, KM, Mwangi, S, Nguti, R, Kivisi, CA, Jensen, ATR, Bejon, P, Kapulu, MC, Abdi, AI, Kinyanjui, SM