Maryland Code, Family Law § 5-1028

(i) in ten point boldface type a statement that the affidavit is a legal document and constitutes a legal finding of parentage;

(ii) the full name and the place and date of birth of the child;

(iii) the full name of the attesting parent who did not give birth to the child;

(iv) the full name of the attesting mother of the child;

(v) the signatures of the parents of the child attesting, under penalty of perjury, that the information provided on the affidavit is true and correct;

(vi) a statement by the mother consenting to the assertion of parentage and acknowledging that:

(vii) a statement by the individual who did not give birth to the child that:

(viii) the Social Security numbers provided by each of the parents.

(i) in writing within 60 days after execution of the affidavit; or

(ii) in a judicial proceeding relating to the child:

(2)(i) After the expiration of the 60-day period, an executed affidavit of parentage may be challenged in court only on the basis of fraud, duress, or material mistake of fact.

(ii) The burden of proof shall be on the challenger to show fraud, duress, or material mistake of fact.

(iii) The legal responsibilities of any signatory arising from the affidavit, including child support obligations, may not be suspended during the challenge, except for good cause shown.