Elevated plasma phenylalanine predicts mortality in critical patients with heart failure oleh Wei‐Siang Chen, Chao‐Hung Wang, Chi‐Wen Cheng, Min‐Hui Liu, Chien‐Ming Chu, Huang‐Ping Wu, Pao‐Chin Huang, Yi‐Tsen Lin, Ta Ko, Wen‐Hsin Chen, Huei‐Jen Wang, Shu‐Chiu Lee, Chung‐Yu Liang