Fig. 1From: Lung transplant referral practice patterns: a survey of cystic fibrosis physicians and general pulmonologistsAbsolute Contraindications: substance use history (a), psychosocial and medical comorbidities (b), and CF-specific comorbidities (c) that would preclude cystic fibrosis (CF) or non-CF pulmonary providers’ referral for lung transplant evaluationBack to article page