@misc{indiciae0373a4421911, title = {Alternating hyperphoria. Dissociated vertical deviation (DVD) 'occlusion hyperphoria'.}, author = {W A Houtman and J H Roze and B De Vries and M C Letsch}, year = {1991}, doi = {10.1007/bf00165673}, url = {https://pubmed.ncbi.nlm.nih.gov/1790733/}, note = {Source identifier: 1790733} }