function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annisaqois, Manikmayang & Wägele, J. Wolfgang', 2],
    ['Chew, Melvin & Abdul Rahim, Azman', 3],
    ['Frutos, Inmaculada & Sorbe, Jean Claude & Junoy, Juan', 3],
    ['Jarquín-Martínez, Ubaldo & García-Madrigal, María Del Socorro', 3],
    ['Jarquín-Martínez, Ubaldo & Gálvez-Zeferino, Neysi', 1],
    ['Shiraki, Shoki & Kakui, Keiichi', 2],
    ['Shiraki, Shoki & Shimomura, Michitaka & Kakui, Keiichi', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    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);