ID.1
Item
diagnosis of t2dm > 6 months
boolean
ID.2
Item
metformin treatment for at least 6 months
boolean
ID.3
Item
age > 18 years
boolean
ID.4
Item
ability to give written informed consent
boolean
ID.5
Item
no metformin treatment in the last 6 months (control group)
boolean
ID.6
Item
concurrent intake of preparations containing vb12 (within the last 3 months prior to study participation)
boolean
ID.7
Item
lack of written and/or oral understanding in german, french, italian or english languages
boolean
ID.8
Item
diagnosis of transcobolamin transporter defect
boolean
ID.9
Item
diagnosis of chronic or acute liver diseaseliver insufficiency with child-pugh scores b and c and acute hepatitis
boolean
ID.10
Item
diagnosis of renal disease (creatinine-clearance <60 ml/min)renal insufficiency stadium iii, iv and v (kdoqi) and acute renal diseases
boolean