Group 1 ( n = 38 ) received 1.5 g/d eicosapentaenoic acid ( EPA ) and docosahexaenoic acid ( DHA ) as ready-to-eat meals enriched with liquid fish oil ; group 2 ( n = 30 ) received the same amount of these LC n-3 PUFAs as microencapsulated fish oil powder and regular meals ; and group 3 ( n = 31 ) was the control group , which received placebo powder and regular meals .