** Shares of medical device maker Nevro Corp NVRO.N fall
as much as 10.3% to an all-time low of $8.93
** Brokerage Citi Research downgrades NVRO to "sell" from
"neutral" and Establishment Labs ESTA.O to "neutral" from
"buy"
** Citi cuts PT on NVRO to $9 from $13.50, saying market
recovery for its chronic pain devices, that also face
competition, remains difficult
** ESTA shares down marginally in early trading
** YTD, ESTA up 108.3% and NVRO down 55.1%
(Reporting by Puyaan Singh)
((Puyaan.Singh@thomsonreuters.com;))