function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cho, Hae Jin & Lee, Hyun & Li, Vladimir & Jargalmaa, Suldbold', 1],
    ['Guan, Qian-Xin & Liu, Chao-Mao & Zhao, Tang-Jie', 1],
    ['Jarvis, Charlie', 2],
    ['Karunarathna, Samantha C. & Priyashantha, K Hasith', 2],
    ['Regio, Nicolas do Carmo & Palacio, Melissa', 3],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Wang, Xia & Bau, Tolgor', 1],
    ['Wu, Fang & Yuan, Yuan & Malysheva, Vera F. & Du, Ping', 1],
    ['Yuan, Hai-Sheng & Lu, Xu & Decock, Cony', 6],
    ['Zambrano-Forero, Cristian J & Davila-Giraldo, Lina R', 2],
    ['Zhang, Xiaojie & Yuan, Qi & Su, Jiangqing & Zhao, Changlin', 2],
    ['de la Fuente, Javier Isaac & García-Jiménez, Jesús', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);