function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Doti, Brenda Lía & Wilson, George D. F.', 7],
    ['Kensley, B & Schotte, M', 4],
    ['Kim, Jeongho & Lee, Wonchoel & Karanovic, Ivana', 2],
    ['Kim, Sung Hoon & Kim, Jong Guk & Yoon, Seong Myeong', 4],
    ['Leach, William Elford', 2],
    ['Morales-Nunez, Andres G & Chigbu, Paulinus', 1],
    ['Ohta, Mizuki & Takano, Tsuyoshi & Kojima, Shigeaki', 2],
    ['İpek, Mehmet & Özbek, Murat', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);