Practitioners include alternative medicine providers such as nutritionists, herbologists, naturopaths, and chiropractors. The Oregon Association of Naturopathic Physicians reports that many naturopaths "customize" the pediatric vaccine schedule. The level of naturopathic training varies among traditional naturopaths in the United States. Naturopaths trained at Bastyr are required to study various non-medical folk remedies, including homeopathy. Naturopaths focus on a holistic approach, completely avoiding the use of surgery and conventional medicines. Naturopaths are often opposed to mainstream medicine and take an antivaccinationist stance. Licensed naturopaths present themselves as primary care providers. Traditional naturopaths deal exclusively with lifestyle changes, not diagnosing or treating disease. Harriet A. Hall includes carctol among the biologically-based remedies promoted by naturopaths. Her blog provides an insider's perspective on how naturopaths practice and are trained. Naturopaths are known for their frequent campaigning for legal recognition in the United States.