Sentence examples for practically difficult to perform from inspiring English sources

Although randomized trials would be ideal for controlling such bias, it is practically difficult to perform prospective clinical trials in which patients with leukemia in CR1 are randomly assigned to receive HSCT from an 8/8 MUD or RD/1AGMM-GVH.

Though a randomized controlled trial on TAC is warranted to assess more reliable benefits and risks of TAC, it would be practically difficult to perform the trial due to the difficulty in having sufficient numbers of TAC and finding appropriate control group.

However, it is practically difficult to perform the rescue experiments in the organoid culture system because the lentivirus transfection is required for the gene transduction into the primary stem/progenitor cells and the APC gene (> 8.5k base pairs) is too large to be cloned into the lentivirus.

Such a study would ethically and practically be difficult to perform on human pregnancy.

Although it is very difficult to perform a valid evaluation for a service that practically refers to the entire web population, the results from the evaluation underpin the motive of this work, i.e., the fact that large-scale web search engines encounter limitations when employed by users featuring specific search modes.

One reason is that it's difficult to perform.

The stent procedure is extremely difficult to perform.

But clinical trials are difficult to perform with children.

Skills that are difficult to perform.

Isolated joint movements are difficult to perform.

However, such condition is practically difficult to obtain.