function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bruzelius, Ragnar M.', 1],
    ['Bustamante Navarrete, Abdhiel A. & González Fuentes, Guillermo', 2],
    ['Bustamante-Navarrete, Abdhiel Arnaldo', 1],
    ['Bustamante-Navarrete, Abdhiel Arnaldo & Oróz, Anahí', 1],
    ['Gonzalez, Guillermo & Cotoras, Darko D. & Grez, Audrey A.', 10],
    ['González, Guillermo', 2],
    ['Hofmann, Walter', 5],
    ['Mader, Leopold', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);