Contraindication to Clopidogrel 
Smoking (current smokers and patients who quit smoking less than six months) 
Malignancy(diagnosed or under investigation) 
Haematological disorders (Anaemia, malignancy, bleeding disorders) 
Women of child-bearing potential 
Use of corticosteroids/other antithrombotic agents(warfarin) 
Chronic liver disease (Cirrhosis, malignancy and patients with more than twice the upper limit of liver function tests) 
Unable to consent. 
Use of other investigational study drugs within 1 year prior to study entry 
Previous participation in this study       
    

NCT00728156_exc_T1
Drug
Clopidogrel
NCT00728156_exc_T2
Condition
Contraindication
NCT00728156_exc_T3
Condition
Smoking
NCT00728156_exc_T4
Condition
smokers
NCT00728156_exc_T5
Temporal
current
NCT00728156_exc_T6
Condition
quit smoking
NCT00728156_exc_T7
Temporal
less than six months
NCT00728156_exc_T8
Condition
Malignancy
NCT00728156_exc_T9
Mood
diagnosed
NCT00728156_exc_T10
Mood
under investigation
NCT00728156_exc_T11
Scope
diagnosed or under investigation
NCT00728156_exc_T12
Condition
Haematological disorders
NCT00728156_exc_T13
Condition
Anaemia
NCT00728156_exc_T14
Condition
malignancy
NCT00728156_exc_T15
Condition
bleeding disorders
NCT00728156_exc_T16
Scope
Anaemia, malignancy, bleeding disorders
NCT00728156_exc_T17
Person
Women
NCT00728156_exc_T18
Condition
child-bearing potential
NCT00728156_exc_T19
Drug
corticosteroids
NCT00728156_exc_T20
Drug
antithrombotic agents
NCT00728156_exc_T21
Drug
warfarin
NCT00728156_exc_T22
Condition
Chronic liver disease
NCT00728156_exc_T23
Condition
Cirrhosis
NCT00728156_exc_T24
Condition
malignancy
NCT00728156_exc_T25
Value
more than twice the upper limit
NCT00728156_exc_T26
Measurement
liver function tests
NCT00728156_exc_T27
Scope
Cirrhosis, malignancy and patients with more than twice the upper limit of liver function tests
NCT00728156_exc_T28
Observation
Unable to consent.
NCT00728156_exc_T29
Drug
investigational study drugs
NCT00728156_exc_T31
Temporal
within 1 year prior to study entry
NCT00728156_exc_T30
Temporal
Previous
NCT00728156_exc_T32
Observation
participation in this study