If you see primary hyperparathyroidism in mothers with vitamin-D deficiency osteomalacia: think of tertiary.
Teotia
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D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000209:etiology* / Q000378:metabolism; D008429:Maternal Welfare; D010018:Osteomalacia / Q000150:complications*; D011247:Pregnancy; D014808:Vitamin D Deficiency / Q000150:complications*