Tools to simulate child-penalty data and estimate DID, TD, and NTD
    identification frameworks from Leventer (2025), "Identification of Child
    Penalties" <doi:10.48550/arXiv.2602.07486>.

Calculation of standard deviation scores and percentiles adduced from different
    standards (WHO, UK, Germany, Italy, China, etc). Also, references for laboratory values in
    children and adults are available, e.g., serum lipids, iron-related blood parameters, IGF, liver enzymes. See package documentation for full list.

Provides functions to access data from public RESTful APIs including
    'FINDIC API', 'World Bank API', and 'Nager.Date', 
    retrieving real-time or historical data related to Chile such as financial indicators, 
    holidays, and more. 
    Additionally, the package includes curated datasets related to Chile, covering topics 
    such as human rights violations during the Pinochet regime, electoral data, census samples, 
    health surveys, seismic events, territorial codes, and environmental measurements. 
    The package supports research and analysis focused on Chile by integrating open APIs with 
    high-quality datasets from multiple domains. For more information on the APIs, see: 
    'FINDIC' <https://findic.cl/>, 
    'World Bank API' <https://datahelpdesk.worldbank.org/knowledgebase/articles/889392>, 
    and 'Nager.Date' <https://date.nager.at/Api>.

Calculates the chilling and heat accumulation for studies of the temperate fruit trees. The models in this package are: Utah (Richardson et al., 1974, ISSN:0018-5345), Positive Chill Units - PCU (Linsley-Noaks et al., 1995, ISSN:1017-0316), GDH-A - Growing Degree Hours by Anderson et al.(1986, ISSN:0567-7572), GDH-R - Growing Degree Hours by Richardson et al.(1975, ISSN:0018-5345), North Carolina (Shaltout e Unrath, 1983, ISSN:0003-1062), Landsberg Model (Landsberg, 1974, ISSN:0305-7364), Q10 Model (Bidabe, 1967, ISSN:0031-9368), Jones Model (Jones et al., 2013 <DOI:10.1111/j.1438-8677.2012.00590.x>), Low-Chill Model (Gilreath and Buchanan, 1981, ISSN:0003-1062), Model for Cherry "Sweetheart" (Guak and Nielsen, 2013 <DOI:10.1007/s13580-013-0140-9>), Model for apple "Gala" (Guak and Nielsen, 2013 <DOI:10.1007/s13580-013-0140-9>), Taiwan Model (Lu et al., 2012 <DOI:10.17660/ActaHortic.2012.962.35>), Dynamic Model (Fishman et al., 1987, ISSN:0022-5193) adapted from the function Dynamic_Model() of the 'chillR' package (Luedeling, 2018), Unified Model (Chuine et al., 2016 <DOI:10.1111/gcb.13383>) and Heat Restriction model.