function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Byvaltsev, A. M. & Belova, K. A. & Danilov, Yu. N.', 1],
    ['Nalinrachatakan, Pakorn & Ascher, John S. & Kasparek, Max', 2],
    ['Niu, Ze-Qing & Ascher, John S. & Griswold, Terry', 14],
    ['Niu, Ze-Qing & Wu, Yan-Ru & Zhu, Chao-Dong', 3],
    ['Tran, Ngat Thi & Truong, Lam Xuan & Ljubomirov, Toshko', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);