Table 1.

Numbers and dates of plasma sample collections

Date of collection	Hospital A	Hospital B	Hospital C	Total
Day 0	87	6	16	109
Day 14	43	7	15	65
Day 28	65	NA	NA	65
Month 2	NA	7	16	23
Month 6	NA	5	15	20
Year 1	42	0	6	48
Total	237	25	68	330

NA, Samples were not collected at the time points