function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bezark, Larry G.', 3],
    ['Bezark, Larry G. & Santos-Silva, Antonio', 1],
    ['Botero, Juan Pablo & Bezark, Larry G. & Santos-Silva, Antonio', 1],
    ['Chapman, Eric G. & Richards, Austin B. & Dupuis, Julian R.', 3],
    ['Clarke, Robin & Zamalloa, Sonia', 1],
    ['Heffern, Daniel & Botero, Juan Pablo & Santos-Silva, Antonio', 1],
    ['Heffern, Daniel J. & Vlasak, Josef & Alten, Ronald L.', 1],
    ['Martins, Ubirajara R. & Galileo, Maria Helena M.', 1],
    ['Perez-Flores, Oscar & Toledo-Hernandez, Victor H.', 1],
    ['Vlasak, Josef & Santos-Silva, Antonio', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);