function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Delgado, Leonardo & Mora-Aguilar, Eder F.', 1],
    ['Dupuis, Fabien', 1],
    ['Figueroa, Luis & Ratcliffe, Brett C.', 11],
    ['Gasca-Álvarez, Héctor & Amat-García, Germán', 1],
    ['Hielkema, Auke J. & Hielkema, Meindert A.', 3],
    ['Mondaca, José', 2],
    ['Mondaca, José & Rothmann, Sergio', 1],
    ['Moore, Matthew R. & Cave, Ronald D. & Branham, Marc A.', 24],
    ['Pardo-Locarno, Luis Carlos & Gonzalez, Ranulfo', 1],
    ['Paucar-Cabrera, Aura & Ratcliffe, Brett C.', 12],
    ['Vallejo, Fernando & Morón, Miguel Angel', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=58)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);