function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Georgiev, D. & Ruchin, A. B.', 1],
    ['Neto, Alberto Moreira da Silva & Aldrete, Alfonso Neri García', 4],
    ['Ostrovsky, A. M.', 1],
    ['Yoshizawa, Kazunori & Aldrete, Alfonso Neri García', 59],
    ['Yoshizawa, Kazunori & Lienhard, Charles', 7],
    ['Yoshizawa, Kazunori & Lienhard, Charles & Abd, Idris', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=95)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);