function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Fan, Honghong & Wei, Guo & Chen, Xinlu & Guo, Hong', 1],
    ['Fesharaki-Esfahani, Monireh & Shahpiri, Azar', 2],
    ['Lee, Jae-Yun & Jeong, Yun-Seok & Kim, Pil Soo', 3],
    ['Oshmarin, P. G.', 1],
    ['Yang, Chengshuai & Li, Weichao & Li, Chen & Zhou, Zhihua', 1],
    ['Zhang, Chi & Chen, Xinlu & Crandall-Stotler, Barbara', 1],
    ['Zhang, Xinhua & Teixeira da Silva, Jaime A. & Niu, Meiyun', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    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);