Myasthenia Gravis:
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001731/
http://www.myasthenia.org/
Thymoma:
http://www.cancer.gov/cancertopics/pdq/treatment/thymoma/patient/page1
http://www.cancer.net/patient/Cancer+Types/Thymoma
Gastroesophageal reflux (GERD)
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001311/
http://digestive.niddk.nih.gov/ddiseases/pubs/gerd/
Achalasia
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001313/
Lung Cancer:
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0004529/
http://www.cancer.gov/cancertopics/types/lung
http://www.nccn.com/cancer-treatment/lung-cancer.html
Esophageal Cancer
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001328/
http://www.cancer.gov/cancertopics/types/esophageal