Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase III, Randomised, Multicenter, Double-blind, Parallel-group, Active Controlled Study to Evaluate the Efficacy and Safety of Oral Dabigatran Etexilate (150 mg Bid) Compared to Warfarin (INR 2.0-3.0) for the Secondary Prevention of Venous Thromboembolism.
Brief Summary: The general aim of this study is to determine the comparative safety and efficacy of dabigatran etexilate administered orally and warfarin (International Normalized Ratio (INR) of 2.0-3.0) for the long-term treatment and secondary prevention of symptomatic venous thromboembolism in patients who have been successfully treated with standard doses of an approved anticoagulant for three to twelve months for confirmed acute symptomatic Venous Thrombo-embolism.


Options:
A: Inclusion Criteria:

* A histologic diagnosis of malignancy;
* At planned initiation of a new systemic chemotherapy regimen (including patients starting on first chemotherapy or patients previously treated but starting on a new regimen);
* A risk score for VTE ≥3 \[assign score of 2 for very high risk sites of cancer (stomach, pancreas), score of 1 for high risk site (lung, lymphoma, gynecologic, bladder, testicular) and score of 0 for all other sites\], hemoglobin \<10 g/dL or planned use of erythropoiesis stimulating agents, platelet count ≥350,000/mm3, total leukocyte count \> 11,000/mm3 or body mass index ≥ 35 kg/m2\]. Any counts meeting criteria drawn within 2 weeks prior to enrollment are considered acceptable.
* Age 18 years or older
* Provide written, informed consent.

Exclusion Criteria:

* Active bleeding or at high risk of serious bleeding complication in the opinion of the investigator
* Diagnosis of primary brain tumor multiple myeloma, leukemia, or myelodysplastic syndrome
* Planned stem cell transplant
* Life expectancy \< 6 months
* Known allergy to heparin or LMWH
* Patient or caregiver incapable of daily self-injection
* Acute or chronic renal insufficiency with creatinine clearance \< 30 mL/min
* History of heparin-induced thrombocytopenia
* Allergy to contrast agents
* Pregnancy
* Need for anticoagulant therapy
* Platelet count \< 75,000/mm3
B: Inclusion Criteria:

1. Hospitalized medical patients 70 years of age or older
2. Acute medical illness with significant decrease in mobility expected for at least 4 days (patient bedridden or only able to walk short distances)
3. written informed consent

Exclusion Criteria:

1. immobilization longer than 3 days prior to randomization
2. prior major surgery, trauma or invasive procedure within the last 4 weeks including any injuries or operation of central nervous system
3. expected major surgical or invasive procedure within the next 3 weeks after randomization
4. LMWH/heparin administration longer than 48 hours in the 5 days prior to randomization
5. immobilization due to cast or fracture
6. indication for anticoagulatory or thrombolytic therapy
7. acute symptomatic DVT / PE
8. known hypersensitivity to any of the study drugs or drugs with similar chemical structures
9. Acute or history of heparin induced thrombocytopenia type II (HIT II)

Other protocol-defined inclusion/exclusion criteria may apply
C: Inclusion Criteria:

* Confirmed acute symptomatic proximal DVT without symptomatic PE

Exclusion Criteria:

* Legal lower age limitations (country specific)
* Thrombectomy, insertion of a caval filter, or use of a fibrinolytic agent to treat the current episode of DVT and/or PE
* Other indication for VKA than DVT and/or PE
* The pre-randomization anti-coagulant treatment (Criteria # 4) has been prolonged from 36 hours to a maximum of 48 hours.
D: Inclusion criteria:

Inclusion_Criteria

* Acute symptomatic deep vein thrombosis (DVT)
* Pulmonary embolism (PE) 3-12 months prior to screening, which has been documented by objective testing

Exclusion criteria:

Exclusion_Criteria

* Symptomatic DVT or PE at screening Interruption of anticoagulant therapy for 2 or more weeks during the 3-12 months of treatment for the prior VTE.
* Patients who in the investigators judgement are perceived as having an excessive risk of bleeding Elevated Aspartate aminotransferase (AST) or Alanine tranminase (ALT) \> 2x ULN
* Severe renal impairment (estimated creatinine clearance \<= 30 ml/min)

Answer: D