The phrase "are preferred only" is correct and usable in written English.
It can be used to specify that something is exclusively favored or chosen over other options.
Example: "In this study, certain methods are preferred only for their efficiency in data collection."
Alternatives: "are exclusively preferred" or "are favored solely".
GAG coding for Glu is preferred only in P. deltoides, while the other three poplar species prefer to use GAA.
In addition, other water sources such as bottled water and vendor water were preferred only at the 2.4% level.
Instead of sweep air, pure oxygen production is preferred only at small current density, which delivers the highest system efficiency but the lowest methane yield.
It is shown that competitive beamforming is preferred in the limit of low SNR irrespective of the quality of CSI, while cooperative beamforming is preferred only at high SNR and low Doppler frequencies, confirming that base station cooperation is not always advantageous.
To sum up our main results, with limited commitment and negative intertemporal correlation (and also with full commitment), the results are almost what we would expect: Early recognition is helpful and a late system is preferred only if the increase in precision (decrease in noise) is sufficiently large.
Terbutaline administered subcutaneously should be preferred only in pregnancy because it appears safer [ 13].
In the two scenarios with a high prevalence of HPV, primary cytology screening was preferred only if higher costs for HPV screening were also assumed.
In contrast, cr3′ss+126 was repressed when the ratio was altered in either direction, whereas cr3′ss+81 was preferred only at low U2AF35/U2AF65 ratios (Fig. 5g).
In mice, among six codons that designate serine, the triplet containing CG is preferred only 5.1% (P < 1.0 × 10−; Materials and Methods).
They suggest recent lower estimates of stroke risk shift the 'tipping point' such that anticoagulation with warfarin is preferred only at a higher CHADS2 score than currently used.
