AF	atrial fibrillation
ASA	acetylsalicylic acid (aspirin)
BMI	body mass index
BP	blood pressure
BZD	benzodiazepine
CHD	coronary heart disease
CHF	congestive heart failure
CVA	cerebrovascular accident
DM	diabetes mellitus
DVT	deep vein thrombosis
GPRD	general practice research database
HF	heart failure
HRT	hormone replacement therapy
HTN	hypertension
IBD	inflammatory bowel disease
LD	liver disease
MAOI	monoamine oxidase inhibitor
MI	myocardial infarction
NDRI	norepinephrine-dopamine reuptake inhibitor
NSAIDs	nonsteroidal anti-inflammatory drugs
OC	oral contraceptive
PE	pulmonary embolism
PVD	peripheral vascular disease
SNRI	serotonin-norepinephrine reuptake inhibitor
SSRI	selective serotonin reuptake inhibitor
TCA	tricyclic antidepressant
UK	United Kingdom
USA	United States of America
UTI	urinary tract infection
VTE	venous thromboembolism.