RT Journal Article SR Electronic T1 Market competition among manufacturers of novel high-risk therapeutic devices receiving FDA premarket approval between 2001 and 2018 JF BMJ Surgery, Interventions, & Health Technologies FD BMJ Publishing Group Ltd SP e000152 DO 10.1136/bmjsit-2022-000152 VO 5 IS 1 A1 Vinay K Rathi A1 James L Johnston A1 Sanket Dhruva A1 Joseph Ross YR 2023 UL http://sit.bmj.com/content/5/1/e000152.abstract