1. 营养学   oncology   gerontology   orthodontics   dietetics   Hint Half-n-half Clue   2. 病理学   gerontology   pathology   psychology   pediatrics, paediatrics   Half-n-half Clue   3. 心脏病学   psychology   cardiology   neurology   rheumatology   Half-n-half Clue   4. 泌尿学   urology   dentistry   cardiology   gynecology, gynaecology   Half-n-half Clue   5. 肾脏病学   nephrology   psychiatry   urology   oncology   Half-n-half Clue   6. 牙科   orthodontics   dentistry   nephrology   physiology   Half-n-half Clue   7. 内分泌学   cardiology   dentistry   orthodontics   endocrinology   Half-n-half Clue