1. Aisaka K, Mori H, Ogawa T, Kigawa T (1985) Effects of mother-infant interaction on maternal milk secretion and dynamics of maternal serum prolactin levels in puerperium. Nippon Sanka Fujinka Gakkai Zasshi 37:713–720
2. Axelsson A, Laage-Hellman JE (1962) The gusto-lachrymal reflex. The syndrome of crocodile tears. Acta Otolaryngol 54:239–254
3. Becht M, Vingerhoets AJ (1997) Why we cry and how it affects mood. Psychosom Med 59:92
4. Bennett MP, Lengacher C (2007) Humor and laughter may influence health IV. Humor and immune function. Evid Based Complement Altern Med
5. Bogorad FA (1979) The symptom of crocodile tears. F. A. Bogorad. Introduction and translation by Austin Seckersen. J Hist Med Allied Sci 34:74–79