International Lymphoedema Framework (ILF)
Lymphatic Education & Research Network (LE&RN)
Lymphatic Education & Research Network – Canada Chapter (LE&RN)
Lymphology Association of North America (LANA)
National Lymphedema Network (NLN)
International Society of Lymphology (ISL)
Your Provincial Lymphedema Association and other National Lymphedema Frameworks can also be excellent resources.