Corrigendum Table 1.

Sample treatment according of case and control status and in relation to EPA+DHA plasma concentrations.

Prior thawings	Controls (n = 333)		Preterm cases (n = 367)		Mean of EPA+DHA%
					Controls		Preterm cases
	n	%	n	%	Mean	SEM	Mean	SEM
Number of thawings, sample 1
0	297	89	77	21	2.05	0.03	1.91	0.07
1	34	10	163	44	1.80	0.07	1.42	0.03
2+	2	1	127	35	1.22	0.18	1.32	0.03
Number of thawings, sample 2
0	326	95	60	16	2.04	0.03	1.79	0.09
1	15	4	243	66	1.72	0.17	1.45	0.03
2+	1	0.3	63	17	1.69	–	1.39	0.07