function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Freitas, Juliana Gomes & Alves, Lania Isis Ferreira', 3],
    ['Guiggi, Alessandro & Mariotti, Mauro', 7],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 3],
    ['Hoxey, Paul & Gdaniec, Andrew', 13],
    ['Info Flora', 3],
    ['Jarvis, Charlie', 25],
    ['Linnaeus, Carolus', 22],
    ['Majure, Lucas C. & Encarnacion, Yuley & Clase, Teodoro', 5],
    ['Martínez-González, César Ramiro & Gallegos-Vázquez, Clemente', 4],
    ['Oliveira, Anabela Silveira De & Pontes, Rodrigo Corrêa', 9],
    ['Ruiz-Dominguez, Catalina & Vovides, Andrew P. & Sosa, Victoria', 11],
    ['Sanchez, Daniel & Vazquez-Benitez, Balbina', 43],
    ['Sokoloff, Paul C. & Freebury, Colin E. & Hamilton, Paul B.', 4],
    ['Walter, Helmut E. & Cadiz-Veliz, Aron & Merino, Beatriz M.', 9],
    ['Walter, Helmut E. & Guerrero, Pablo C.', 19],
    ['Other (27)', 40]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=220)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);