function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Contreras-Félix, Gerardo A. & Santibáñez-López, Carlos E.', 1],
    ['Monod, Lionel & Duperre, Nadine & Harms, Danilo', 1],
    ['Santibanez-Lopez, Carlos Eduardo', 1],
    ['Santibáñez, Carlos E. & López, - & Francke, Oscar F.', 1],
    ['Santibäñez-López, Carlos E. & Francke, Oscar F.', 9],
    ['Trujillo, Rony E. & de Armas, Luis F. & Gaitán, Carlos A.', 1],
    ['de Armas, Luis F. & Trujillo, Rony E.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);