function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Batuwita, Sudesh & Benjamin, Suresh P.', 1],
    ['Beier, Max', 6],
    ['Harvey, Mark S. & Ratnaweera, Pamoda B. & Udagama, Preethi V.', 2],
    ['Hoff, C. Clayton & Parrack, Dwain', 1],
    ['Morikawa, Kinichi', 1],
    ['Redikorzev, V.', 1],
    ['Xu, Hongru & Gao, Zhizhong & Zhang, Feng', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    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);