What is the incidence of vitamin B12 deficiency in s/p Roux-en-Y gastric bypass patients? (poll 9093919)

What is the incidence of vitamin B12 deficiency in s/p Roux-en-Y gastric bypass patients?

10% to 25%

26% to 70%

42% to 65%

16% to 36%

Vote View Results

See this poll on: https://poll.fm/9093919/embed