2674040 EYPC egg yolk phosphatidylcholine 82 3986747 eggPC egg phosphatidylcholine 72 930260 EPC egg yolk phosphatidylcholine 48 2674042 EyPC egg-yolk phosphatidylcholine 3 929816 EPA egg yolk phosphatidylcholine 1 950584 EYL egg yolk phosphatidylcholine 1