F2 and venous thromboembolism: OSA: obstructive sleep apnea; VTE: venous thromboembolism; DVT: deep vein thrombosis; PE: pulmonary embolism; CPAP: continuous positive airway pressure; SBD: sleep breathing disorder; AHI: apnea-hypopnea index; PTE: pulmonary thromboembolism; OSAHS: obstructive sleep apnea-hypopnea syndrome; OSAS: obstructive sleep apnea syndrome; INR: international normalized ratio; PT: prothrombin time; PESI: pulmonary embolism severity index; HR: hazard ratio