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  1. Lab Test Results: Units of Measurement
  2. Lab Tests for Fibromyalgia
  3. Labor and Delivery
  4. Labor Induction and Augmentation
  5. Labyrinthitis
  6. Lactic Acid Dehydrogenase (LDH) Test - Medical Test
  7. Lactic Acid Test - Medical Test
  8. Lactose Intolerance
  9. Laetrile/Amygdalin (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  10. Laetrile/Amygdalin (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  11. Langerhans Cell Histiocytosis Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  12. Langerhans Cell Histiocytosis Treatment (PDQ®): Treatment - Patient Information [NCI]
  13. Language Development Between 12 and 24 Months of Age
  14. Language Development From Age 6 to 10 Years
  15. Language Development in Newborns
  16. Laparoscopic Gallbladder Removal Surgery for Gallstones
  17. Laparoscopic Gastric Banding (video)
  18. Laparoscopic Gastric Banding: Returning Home (video)
  19. Laparoscopic Inguinal Hernia Repair
  20. Laparoscopic Ovarian Drilling (Ovarian Diathermy) for PCOS
  21. Laparoscopic Surgery
  22. Laparoscopic Surgery for Endometriosis
  23. Laparoscopic Tubal Ligation
  24. Laparoscopy (video)
  25. Laparoscopy - Medical Test
  26. Laparoscopy in Children (video)
  27. Laryngeal Cancer Treatment (Adult) (PDQ®): Treatment - Health Professional Information [NCI]
  28. Laryngeal Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
  29. Laryngitis
  30. Laryngoscopy - Medical Test
  31. Laser In-Situ Keratomileusis (LASIK) for Farsightedness
  32. Laser Iridotomy for Glaucoma
  33. Laser Photocoagulation and Cryopexy for Retinal Tears
  34. Laser Photocoagulation for Age-Related Macular Degeneration
  35. Laser Photocoagulation for Diabetic Retinopathy
  36. Laser Resurfacing
  37. Laser Surgery for Genital Warts
  38. Laser Surgery for Warts
  39. Laser Trabeculoplasty for Glaucoma
  40. Laser Treatment for Skin Lesions
  41. Laser Treatment for Varicose Veins
  42. LASIK (Laser In-Situ Keratomileusis) for Nearsightedness
  43. Last Days of Life (PDQ®): Supportive care - Health Professional Information [NCI]
  44. Last Days of Life (PDQ®): Supportive care - Patient Information [NCI]
  45. Late Effects of Treatment for Childhood Cancer (PDQ®): Treatment - Health Professional Information [NCI]
  46. Late Effects of Treatment for Childhood Cancer (PDQ®): Treatment - Patient Information [NCI]
  47. Lateral Collateral Ligament (LCL) Injury
  48. Laxatives
  1. Lead (Pb) Test - Medical Test
  2. Lead Poisoning
  3. Lead Poisoning Screening
  4. Leadless Pacemaker
  5. Learning About Anesthesia for Adults (video)
  6. Learning About Anesthesia for Your Child (video)
  7. Learning About Blood Tests for Children (video)
  8. Learning About Circumcision (video)
  9. Learning About General Anesthesia (video)
  10. Learning About General Anesthesia in Children (video)
  11. Learning About Glucagon (video)
  12. Learning About Insulin Pens (video)
  13. Learning About Noninsulin Medicines That Help Manage Type 2 Diabetes (video)
  14. Learning About Peripheral Nerve Blocks and I.V. Regional Anesthesia (video)
  15. Learning About Peripheral Nerve Blocks for Your Child (video)
  16. Learning About Risk for Heart Attack and Stroke (video)
  17. Learning About Sedation for Adults (video)
  18. Learning About Sedation for Your Child (video)
  19. Learning About Spinal and Epidural Regional Anesthesia (video)
  20. Learning About Spinal, Epidural, and Caudal Anesthesia for Your Child (video)
  21. Learning About the NICU (video)
  22. Learning About Type 2 Diabetes (video)
  23. Learning About Your Blood Test (video)
  24. Learning About Your Child's Bronchoscopy (video)
  25. Learning About Your Child's CT Scan (video)
  26. Learning About Your Child's Laryngoscopy (video)
  27. Learning About Your Child's MRI Test (video)
  28. Learning About Your Child's Voiding Cystourethrogram (VCUG) Test (video)
  29. Learning About Your Child's X-Ray Test (video)
  30. Learning About Your CT Scan (video)
  31. Learning About Your MRI Test (video)
  32. Learning About Your X-Ray Test (video)
  33. Learning Disabilities
  34. Learning to Say No
  35. Left Atrial Appendage Closure: Before Your Procedure (video)
  36. Left Atrial Appendage Closure: Returning Home (video)
  37. Left Ventricular Hypertrophy (LVH)
  38. Leg Amputation
  39. Leg Aneurysm
  40. Leg Cramps During Pregnancy
  41. Leg Injuries
  42. Leg Problems, Noninjury
  43. Legionnaires' Disease and Pontiac Fever
  44. Lennox-Gastaut Syndrome
  45. Leriche Syndrome
  46. Letting It Go: Getting Past Negative Emotions
  47. Leukemia
  48. Levels of Evidence for Adult and Pediatric Cancer Treatment Studies (PDQ®): Treatment - Health Professional Information [NCI]
  49. Levels of Evidence for Cancer Genetics Studies (PDQ®): Genetics - Health Professional Information [NCI]
  50. Levels of Evidence for Cancer Screening and Prevention Studies (PDQ®): Screening - Health Professional Information [NCI]
  51. Levels of Evidence for Human Studies of Integrative, Alternative, and Complementary Therapies (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  52. Levels of Evidence for Supportive and Palliative Care Studies (PDQ®): Supportive care - Health Professional Information [NCI]
  53. Levonorgestrel (LNg) IUD
  54. Levothyroxine