FIRTH J.D, . (2020). OXPORD TEXTBOOK OF MEDICINE : VAL.4 SECTION 22-30. : OXFORD UNIVERSITY PRESS.
FIRTH J.D, . 2020. OXPORD TEXTBOOK OF MEDICINE : VAL.4 SECTION 22-30. : OXFORD UNIVERSITY PRESS.
FIRTH J.D, . OXPORD TEXTBOOK OF MEDICINE : VAL.4 SECTION 22-30. : OXFORD UNIVERSITY PRESS. 2020.