function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Jeong, Man-Ki & Soh, Ho Young & Suh, Hae-Lip', 4],
    ['Jeong, Man-Ki & Wi, Jin Hee & Suh, Hae-Lip', 2],
    ['Salazar-Vallejo, Sergio I. & Rizzo, Alexandra E.', 8],
    ['Sui, Jixing & Li, Xinzheng', 1],
    ['Zhang, Dong-sheng & Zhou, Ya-dong & Wang, Chun-sheng', 1],
    ['Zhang, Jinghuai & Qiu, Jian-Wen', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);