It also has been linked to other ailments, including other nerve disorders and cancers.
Epstein-Barr virus causes infectious mononucleosis and has been linked to other diseases.
But the long-feather gene has been linked to other traits, such as cancer.
Similar symptoms had been linked to other breast implants and previous studies had "uniformly failed to demonstrate any causal link between implants and symptom prevalence".
The legal step creates a new setback for Mr. Chirac, who has been linked to other investigations connected with his 18 years as mayor.
The five are believed to have recently arrived in New York from China, and have not been linked to other scams in the city, the police said.
Some terrorism experts remain concerned about the group's threats, and its members have been linked to other Islamic militants, including Al Qaeda.
But the same injections have also long been linked to other rare but devastating complications, including nerve damage, paralysis and strokes.
Mr. Awlaki helped support an attempted attack on a Detroit-bound flight in 2009 and had been linked to other attempted attacks in the United States.
The Rhodes Must Fall campaign has been linked to other campaigns against alleged hate speech that have targeted rightwing politicians – and those expressing doubts about the campaign for transgender rights.
Zika has been proven to cause microcephaly, a birth defect marked by small head size that can lead to serious developmental problems, and has been linked to other severe fetal brain abnormalities.
