medlineplus.gov/ency/article/001041.htm Salivary gland infections Salivary gland infections https://medlineplus.gov/ency/article/001041.htm medlineplus.gov/ency/article/001041.htm https://medlineplus.gov/ency/article/001041.htm y medlineplus.gov/ency/article/001041.htm medlineplus.gov/ency/article/001041.htm medlineplus.gov/ency/article/001041.htm National Institutes of Health medlineplus.gov/ency/article/001041.htm