The phrase "were found to cause" is correct and usable in written English.
This phrase is often used to indicate that something has been observed to lead to a certain effect. For example: Studies were found to cause adverse health effects in laboratory mice.
Integrated treatments were found to cause significant reductions in the mean number of purple loosestrife stems.
Certain solvents were found to cause swelling and induce crystallization in the polymer.
The transmitted bending moments were found to cause strong parametric instabilities in the system.
Borehole breakouts were found to cause severe channelization of the injected fluid, and a substantial reduction in the injection pressure.
These SMA-containing cells were found to cause contraction of the collagen-GAG analog of extracellular matrix.
Ever since drugs like DES and Thalidomide were found to cause birth defects, drug companies have avoided developing any drugs for pregnant women.
The agency's actions were prompted in part by an unusually high number of drugs that were found to cause liver failure in the past few years.
If it were found to cause cancer, that would lead to much tougher controls on its use, possibly even its removal from the market.
Counterions were found to cause reduction in critical micellar concentration (CMC) and minimum area per head group (Amin) of the 14-E2-14 gemini surfactant.
Both scission and recombination reactions, which strongly compete as a function of the exposure time, were found to cause a strong evolution of the molecular structure.
Furthermore, in already aggregated KL solutions, additions of STDC were found to cause 'de-aggregation' and the number of formed aggregates was dramatically decreased.
