function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hassan, Walaa A. & Al-Shaye, Najla A. & Iamonico, Duilio', 2],
    ['Jarvis, Charlie', 3],
    ['Linnaeus, Carolus', 9],
    ['Moura, Edweslley Otaviano de & de Sousa, Valdeci Fontes', 1],
    ['Ramella, Lorenzo', 13],
    ['Sandoval-Ortega, Manuel Higinio & Zumaya-Mendoza, Silvia', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    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);