| 4-F4t-NeuroP | 4(RS)-4-F4t-neuroprostane |
| 10-F4t-NeuroP | 10(RS)-10-F4t-neuroprostane |
| BMI | body mass index |
| DHA | docosahexaenoic acid |
| F4-NeuroPs | F4-neuroprostanes |
| GC/NICI-MS/MS | gas chromatography/negative-ion chemical ionization tandem mass spectrometry |
| PUFA | polyunsaturated fatty acid |
| RTT | Rett syndrome |
| RCSS | Rett clinical severity scale |
| NH | natural history |