function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gonzalez-Obando, Ranulfo & Aldrete, Alfonso N. Garcia', 5],
    ['González-Obando, Ranulfo & Carrejo-Gironza, Nancy', 9],
    ['González-Obando, Ranulfo & García-Aldrete, Alfonso', 4],
    ['Neto, Alberto Moreira Da Silva & García Aldrete, Alfonso N.', 8],
    ['Obando, Ranulfo González & García Aldrete, Alfonso N.', 7],
    ['Pereira, Antoniel Francisco & Silva-Neto, Alberto Moreira da', 3],
    ['Vinasco-Mondragón, Andrés Felipe & González-Obando, Ranulfo', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=57)',
    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);