inclusion criteria: age ≥60 years having a chronic disease or having undergone major surgery meeting at least one of the following criteria: planned to be discharged from the hospital or discharged from the hospital less than 6 weeks ago; a hospital admission is defined as an overnight stay. departments of interest are those that in the opinion of the principle investigator admit mostly vulnerable elderly and include but are not limited to: cardiology, pulmonology, internal medicine, neurology. visiting a medical outpatient clinic attending the thrombosis care service

inclusion criteria: age ≥60 years having a chronic disease or having undergone major surgery meeting at least one of the following criteria: planned to be discharged from the hospital or discharged from the hospital less than 6 weeks ago; a hospital admission is defined as an overnight stay. departments of interest are those that in the opinion of the principle investigator admit mostly vulnerable elderly and include but are not limited to: cardiology, pulmonology, internal medicine, neurology. visiting a medical outpatient clinic attending the thrombosis care service

inclusion criteria: - age ≥60 years - having a chronic disease or having undergone major surgery - meeting at least one of the following criteria: 1. planned to be discharged from the hospital or discharged from the hospital less than 6 weeks ago; a hospital admission is defined as an overnight stay. departments of interest are those that in the opinion of the principle investigator admit mostly vulnerable elderly and include but are not limited to: cardiology, pulmonology, internal medicine, neurology. 2. visiting a medical outpatient clinic 3. attending the thrombosis care service

inclusion criteria: - age ≥60 years - having a chronic disease or having undergone major surgery - meeting at least one of the following criteria: 1. planned to be discharged from the hospital or discharged from the hospital less than 6 weeks ago; a hospital admission is defined as an overnight stay. departments of interest are those that in the opinion of the principle investigator admit mostly vulnerable elderly and include but are not limited to: cardiology, pulmonology, internal medicine, neurology. 2. visiting a medical outpatient clinic 3. attending the thrombosis care service