"One may concede that there are important and perhaps conflicting interests affected by recordkeeping requirements. On the one hand, maintenance of records indeed may be helpful in developing information pertinent to the preservation of maternal health. On the other hand, as we stated in Roe, during the first stage of pregnancy, the State may impose no restrictions or regulations governing the medical judgment of the pregnant woman's attending physician with respect to the termination of her pregnancy. 410 U.S. at 410 U. S. 163, 410 U. S. 164. Furthermore, it is readily apparent that one reason for the recordkeeping requirement, namely, to assure that all abortions in Missouri are performed in accordance with the Act, fades somewhat into insignificance in view of our holding above as to spousal and parental consent requirements. Recordkeeping and reporting requirements that are reasonably directed to the preservation of maternal health and that properly respect a patient's confidentiality and privacy are permissible. This surely is so for the period after the first stage of pregnancy, for then the State may enact substantive as well as recordkeeping regulations that are reasonable means of protecting maternal health. As to the first stage, one may argue forcefully, as the appellants do, that the State should not be able to impose any recordkeeping requirements that significantly differ from those imposed with respect to other, and comparable, medical or surgical procedures. We conclude, however, that the provisions of §§ 10 and 11, while perhaps approaching impermissible limits, are not constitutionally offensive in themselves. Recordkeeping of this kind, if not abused or overdone, can be useful to the State's interest in protecting the health of its female citizens, and may be a resource that is relevant to decisions involving medical experience and judgment. [Footnote 13] The added requirements for confidentiality, with the sole exception for public health officers, and for retention for seven years, a period not unreasonable in length, assist and persuade us in our determination of the constitutional limits. As so regarded, we see no legally significant impact or consequence on the abortion decision or on the physician-patient relationship. We naturally assume, furthermore, that these recordkeeping and record-maintaining provisions will be interpreted and enforced by Missouri's Division of Health in the light of our decision with respect to the Act's other provisions, and that, of course, they will not be utilized in such a way as to accomplish, through the sheer burden of recordkeeping detail, what we have held to be an otherwise unconstitutional restriction. Obviously, the State may not require execution of spousal and parental consent forms that have been invalidated today."